Malicious PDF — malware analysis report

Static analysis result for SHA-256 731e627128b8e58e…

MALICIOUS

PDF

65.2 KB Created: 2021-04-05 07:48:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 5f65af5f3d31b2d8ccbfd86759d1f001 SHA-1: e4d16e62a2eb502e5ce029df1b88da4ceb7b34e1 SHA-256: 731e627128b8e58ecec27a0e8ff51b6b81ba98784979c33fb73b300af6014feb
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and an ML classifier, and contains numerous external URIs. One URI, https://fokemale.ru/award?keyword=look+back+in+anger+pdf+analysis, is directly embedded and appears to be the primary lure. The PDF structure and embedded links suggest a phishing attempt or a distribution point for further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6589

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://fokemale.ru/award?keyword=look+back+in+anger+pdf+analysis PDF link annotation
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