Private YARA rules Hunting_JS_WebAssembly
Verdictaudit
Severityaudit
WEBSITE ANALYSIS REPORT
http://ctrk.klclick3.com/l/01KPVRJ71W1GCC6J244KRE3G90_1
public
Report summary
Submitted and final observations · captured HTTP activity
- Submitted URL
- http://ctrk.klclick3.com/l/01KPVRJ71W1GCC6J244KRE3G90_1
- Submitted IP / ASN
104.17.93.1 AS13335 · CLOUDFLARENET
- Final URL
- https://www.klaviyo.com/?utm_medium=freebie&utm_source=brand&utm_term=VHqRuJ&_kx=T-IOmbgKTkAw8omMg-pznMtT4ro0DYU6EgTS1Kh01ldKxHifXQjfO5IPepwYBq7j.VHqRuJ
- Final IP / ASN
- 172.64.147.119 AS13335 · CLOUDFLARENET
Final page
- Page title
- Klaviyo: AI Email Marketing & SMS | B2C CRM
- Final DOM MIME
- text/html; charset=utf-8
- Final DOM size
- 39 B (39 bytes)
Detections
Activity
- HTTP requests
- 201
- Observed hosts
- 26
- Script records
- 161
Estimated HTTP data
- Sent
- ~143.2 KB
- Received
- ~15.76 MB
Page capture
Final browser state
Detection signals
URLQuery findings, Threat Detection Systems, and IDS alerts
Threat Detection Systems
2DigiCert UltraDNS Sinkholed
VerdictMalicious
Severitymedium
IDS
1Suricata IDS ET INFO Observed ZeroSSL SSL/TLS Certificate
VerdictVerdict not recorded
Severitylow
Host infrastructure
Observed hosts are context, not independent maliciousness verdicts
| Host | Rank | Registered | First seen | Last seen | Sent | Received | IP | Fingerprints |
|---|---|---|---|---|---|---|---|---|
| unpkg.com | 1093 | 2016-01-06 | 2016-01-07 | 2026-04-20 | 425 B | 1.17 MB | 104.18.1.22 | HSTS Security HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS. WebAssembly Programming languages WebAssembly (abbreviated Wasm) is a binary instruction format for a stack-based virtual machine. Wasm is designed as a portable compilation target for programming languages, enabling deployment on the web for client and server applications. Cloudflare CDN Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services. Fly.io PaaS Fly is a platform for running full stack apps and databases. |
| cdn.sanity.io | 67597 | 2015-01-07 | 2017-03-16 | 2026-04-17 | 5.1 KB | 117.7 KB |  34.149.250.58 | Google Cloud CDN CDN Cloud CDN uses Google's global edge network to serve content closer to users. Google Cloud IaaS Google Cloud is a suite of cloud computing services. Varnish Caching Varnish is a reverse caching proxy. HSTS Security HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS. |
| www.gstatic.com | 146047 | 2008-02-11 | 2012-05-29 | 2026-04-19 | 2.3 KB | 2.57 MB | 142.251.142.227 | |
| www.google.com | 22 | 1997-09-15 | 2015-05-10 | 2026-04-19 | 2.8 KB | 57.1 KB | 142.251.150.119 | |
| cdnjs.cloudflare.com | 1222 | 2009-02-17 | 2012-05-23 | 2026-04-19 | 414 B | 10.0 KB | 104.17.24.14 | HSTS Security HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS. Cloudflare CDN Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services. |
| www.klaviyo.com 1 alerts | 66121 | 2012-03-29 | 2013-10-18 | 2026-04-16 | 77.0 KB | 6.43 MB | 172.64.147.119 | Cloudflare CDN Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services. HSTS Security HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS. Netlify PaaS, CDN Netlify providers hosting and server-less backend services for web applications and static websites. Envoy Reverse proxies Envoy is an open-source edge and service proxy, designed for cloud-native applications. Klaviyo Marketing automation Klaviyo is an email and SMS marketing platform for online businesses. reCAPTCHA Security reCAPTCHA is a free service from Google that helps protect websites from spam and abuse. |
| fonts.gstatic.com | N/A | 2008-02-11 | 2014-04-02 | 2026-04-19 | 2.7 KB | 170.6 KB | 192.178.25.3 | |
| js.hsforms.net | 43845 | 2013-09-18 | 2013-09-26 | 2026-04-22 | 385 B | 593.8 KB | 104.16.5.65 | Amazon CloudFront CDN Amazon CloudFront is a fast content delivery network (CDN) service that securely delivers data, videos, applications, and APIs to customers globally with low latency, high transfer speeds. Cloudflare CDN Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services. HSTS Security HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS. Amazon Web Services PaaS Amazon Web Services (AWS) is a comprehensive cloud services platform offering compute power, database storage, content delivery and other functionality. |
| spider.australiarevival.com | 1435678 | 2021-05-31 | 2021-12-05 | 2026-04-16 | 418 B | 119.8 KB | 52.84.50.82 | Amazon CloudFront CDN Amazon CloudFront is a fast content delivery network (CDN) service that securely delivers data, videos, applications, and APIs to customers globally with low latency, high transfer speeds. Amazon Web Services PaaS Amazon Web Services (AWS) is a comprehensive cloud services platform offering compute power, database storage, content delivery and other functionality. Caddy Web servers Not recorded |
| fast.a.klaviyo.com | 22057 | 2012-03-29 | 2018-04-18 | 2026-04-23 | 458 B | 4.0 KB | 151.101.66.133 | HSTS Security HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS. Nginx Web servers, Reverse proxies Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache. Varnish Caching Varnish is a reverse caching proxy. |
| geolocation.onetrust.com | 4022 | 2004-01-12 | 2018-02-07 | 2026-04-20 | 487 B | 438 B | 104.18.32.137 | Cloudflare CDN Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services. HSTS Security HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS. |
| extend.vimeocdn.com | 80308 | 2010-04-21 | 2015-04-13 | 2026-04-19 | 387 B | 17.1 KB | 151.101.192.217 | Varnish Caching Varnish is a reverse caching proxy. Apache HTTP Server Web servers Apache is a free and open-source cross-platform web server software. |
| www.googletagmanager.com | 283 | 2011-11-11 | 2012-10-04 | 2026-04-19 | 817 B | 1.08 MB | 142.250.74.8 | HSTS Security HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS. |
| bat.bing.com | 2924 | 1996-01-29 | 2014-04-08 | 2026-04-20 | 758 B | 55.6 KB | 150.171.28.10 | HSTS Security HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS. |
| static-tracking.klaviyo.com | 20795 | 2012-03-29 | 2021-12-02 | 2026-04-20 | 7.5 KB | 229.9 KB | 151.101.66.133 | Varnish Caching Varnish is a reverse caching proxy. Amazon S3 CDN Amazon S3 or Amazon Simple Storage Service is a service offered by Amazon Web Services (AWS) that provides object storage through a web service interface. Amazon Web Services PaaS Amazon Web Services (AWS) is a comprehensive cloud services platform offering compute power, database storage, content delivery and other functionality. |
| bat.bing.net | 24312 | 1997-09-03 | 2023-11-04 | 2026-04-20 | 1.8 KB | 1.5 KB | 150.171.27.10 | |
| bite.australiarevival.com | 851571 | 2021-05-31 | 2021-06-14 | 2026-04-16 | 12.5 KB | 6.7 KB | 35.172.245.152 | |
| o19233.ingest.us.sentry.io | N/A | 2012-04-07 | 2026-03-27 | 2026-04-16 | 644 B | 522 B | 34.160.81.0 | HSTS Security HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS. Nginx Web servers, Reverse proxies Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache. Google Cloud CDN CDN Cloud CDN uses Google's global edge network to serve content closer to users. Google Cloud IaaS Google Cloud is a suite of cloud computing services. |
| transcend-cdn.com 4 alerts | 10213 | 2023-01-31 | 2023-02-01 | 2026-04-23 | 1.8 KB | 509.6 KB | 104.18.40.238 | Cloudflare CDN Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services. |
| fonts.googleapis.com | 313 | 2005-01-25 | 2012-05-23 | 2026-04-19 | 486 B | 8.2 KB | 142.250.178.74 | HSTS Security HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS. |
| static.klaviyo.com | 17868 | 2012-03-29 | 2018-04-18 | 2026-04-20 | 7.2 KB | 264.9 KB | 151.101.2.133 | Amazon Web Services PaaS Amazon Web Services (AWS) is a comprehensive cloud services platform offering compute power, database storage, content delivery and other functionality. Varnish Caching Varnish is a reverse caching proxy. Amazon S3 CDN Amazon S3 or Amazon Simple Storage Service is a service offered by Amazon Web Services (AWS) that provides object storage through a web service interface. Nginx Web servers, Reverse proxies Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache. |
| js.hs-scripts.com | 18499 | 2016-07-11 | 2016-08-09 | 2026-04-20 | 382 B | 1.8 KB | 104.16.138.209 | Cloudflare CDN Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services. |
| ctrk.klclick3.com | 1663446 | 2016-11-15 | 2023-05-12 | 2026-04-21 | 516 B | 480.3 KB | 104.17.93.1 | Cloudflare CDN Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services. Envoy Reverse proxies Envoy is an open-source edge and service proxy, designed for cloud-native applications. HSTS Security HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS. Cloudflare Bot Management Security Cloudflare bot management solution identifies and mitigates automated traffic to protect websites from bad bots. |
| static-forms.klaviyo.com | 21447 | 2012-03-29 | 2021-05-06 | 2026-04-20 | 436 B | 1.85 MB | 151.101.194.133 | Amazon Web Services PaaS Amazon Web Services (AWS) is a comprehensive cloud services platform offering compute power, database storage, content delivery and other functionality. Varnish Caching Varnish is a reverse caching proxy. Amazon S3 CDN Amazon S3 or Amazon Simple Storage Service is a service offered by Amazon Web Services (AWS) that provides object storage through a web service interface. |
| js.hs-banner.com | 17150 | 2020-03-09 | 2020-03-26 | 2026-04-20 | 391 B | 68.4 KB | 104.18.40.240 | Envoy Reverse proxies Envoy is an open-source edge and service proxy, designed for cloud-native applications. Cloudflare CDN Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services. |
| a.klaviyo.com | 20004 | 2012-03-29 | 2013-06-03 | 2026-04-20 | 414 B | 1.0 KB | 172.64.147.119 | Cloudflare CDN Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services. Envoy Reverse proxies Envoy is an open-source edge and service proxy, designed for cloud-native applications. HSTS Security HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS. |