Malicious PDF — malware analysis report

Static analysis result for SHA-256 36f9fb8f43dee6b2…

MALICIOUS

PDF

51.6 KB Created: 2020-11-19 03:13:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87a00013a705774388893f815231ec97 SHA-1: dd38783a996f64b9bf821f3a764a889a31810563 SHA-256: 36f9fb8f43dee6b2fba4c6ed9378748da2821dcdb568e3c87042c34b760f1c9b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, with one heuristic specifically identifying a 'PDF_SEO_LINK_FARM'. The ClamAV detection and ML classifier also indicate malicious intent. The embedded URLs suggest a phishing or malicious redirection scheme, likely to distribute further malware or lead users to fraudulent content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5258

Heuristics 4

  • 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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffnew.ru/strik?utm_term=figuras+geometricas+con+area+y+volumen
    • https://wilofera.weebly.com/uploads/1/3/4/4/134488721/a9c69da37b2d36c.pdf
    • https://cdn-cms.f-static.net/uploads/4414851/normal_5fb5619675bce.pdf
    • https://cdn-cms.f-static.net/uploads/4383445/normal_5f8bbd76cdba4.pdf
    • https://cdn-cms.f-static.net/uploads/4368767/normal_5f8f050d8b40d.pdf
    • https://zirofapenepag.weebly.com/uploads/1/3/4/8/134855920/2026358.pdf
    • https://cdn-cms.f-static.net/uploads/4365607/normal_5f93ab7088aec.pdf
    • https://cdn-cms.f-static.net/uploads/4384655/normal_5fa1915b12250.pdf
    • https://cdn-cms.f-static.net/uploads/4427506/normal_5f985d1611511.pdf
    • https://cdn-cms.f-static.net/uploads/4380867/normal_5f8d19f8dc6b8.pdf
    • https://cdn-cms.f-static.net/uploads/4374851/normal_5f9575e1524c9.pdf
    • https://uploads.strikinglycdn.com/files/7a88cbcc-55b5-4cc1-bf60-453dd59c49ef/wuximanulegivuragulodaxod.pdf

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