Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dcde259fc68660f…

MALICIOUS

PDF

35.9 KB Created: 2021-05-20 21:25:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 4f323e5f8017cecbb84c04827c72666d SHA-1: 1fb2a1ebc8f0148f86464e3763a076543e887593 SHA-256: 7dcde259fc68660fd596d707e3740f25b8861fffed66f90e7cf12deff74a1721
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file is identified as a phishing lure due to its small size and the presence of an image-only design with a clickable action. The embedded URL, although marked as benign, is part of the lure mechanism. The ClamAV detection and ML classifier further support its malicious nature, indicating it's likely used to direct users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5505

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 35 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://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=libro+de+formaci%25C3%25B3n+c%25C3%25ADvica+y+%25C3%25A9tica+6+grado+2021+pdf PDF link annotation

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