Malicious PDF — malware analysis report

Static analysis result for SHA-256 45ec28d72e22b25f…

MALICIOUS

PDF

35.6 KB Created: 2021-10-03 02:16:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 55c20dfaf3499c2bb7c2fe4175b0c434 SHA-1: 941c3189b8731c94b902a1d8e25a5fcb499b9780 SHA-256: 45ec28d72e22b25fe8c3a8e9fbc7c8af68b0819aba07d77a5e0e62970ce1db1e
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-based lure, typical of phishing attacks, designed to trick users into clicking embedded links. The ClamAV detection and ML classifier further support its malicious nature. While no scripts were extracted, the PDF structure and heuristics suggest it's designed to redirect users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6848

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/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=best+way+to+remember+notes PDF link annotation

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