Malicious PDF — malware analysis report

Static analysis result for SHA-256 6153ffa5c517649a…

MALICIOUS

PDF

46.9 KB Created: 2020-11-24 00:22:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f2c6653112bebf83c8d1037fb26fa099 SHA-1: 52562b546d248ae999114d7e6483ce9fa9f7aedb SHA-256: 6153ffa5c517649a2337afa25c1a23a2a351bc9a28e534a31c3b265b35e62552
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file exhibits characteristics of a phishing lure, indicated by its small size, image-heavy content, and the presence of clickable external links. The ClamAV detection and ML classifier further support its malicious nature. The primary goal appears to be directing users to external URLs, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7169

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 46 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://trafficel.ru/123?utm_term=lester+sumrall+biography+pdf
    • https://cdn-cms.f-static.net/uploads/4392869/normal_5f93b074b92fb.pdf
    • https://gimelukisisira.weebly.com/uploads/1/3/4/0/134040832/sotumutikozaxo-zakuvupolunuj.pdf
    • https://cdn-cms.f-static.net/uploads/4417813/normal_5fb2fefebaeaa.pdf
    • https://tutitobogin.weebly.com/uploads/1/3/4/4/134485970/4353972.pdf
    • https://pafofenolaf.weebly.com/uploads/1/3/4/6/134668810/2e65cb5ce72de93.pdf
    • https://cdn-cms.f-static.net/uploads/4411503/normal_5fb9fa1289b39.pdf
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/ruwupiwexisifi-fikaritowunu.pdf
    • https://moketotal.weebly.com/uploads/1/3/4/3/134315425/5f8328e03fb9.pdf
    • https://cdn-cms.f-static.net/uploads/4381340/normal_5f9d69b8a7053.pdf
    • https://mipirizu.weebly.com/uploads/1/3/2/6/132682564/222691ae7750.pdf
    • https://fudafovagovareg.weebly.com/uploads/1/3/4/8/134868702/b190d875.pdf
    • https://lolusegixasuvar.weebly.com/uploads/1/3/4/7/134770702/wosod-nokegevokolu.pdf
    • https://uploads.strikinglycdn.com/files/6685e16f-6c3b-4a13-9104-c02f337e4ee6/64943000212.pdf
    • https://uploads.strikinglycdn.com/files/45600e2b-f95a-4606-b94f-889e0833743d/high_performance_habits_espaol.pdf

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