Malicious PDF — malware analysis report

Static analysis result for SHA-256 57a2cff5abe7f364…

MALICIOUS

PDF

35.6 KB Created: 2020-11-14 19:59:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 725d9c3f7c8d2bd963451cae239a77d5 SHA-1: 6995a21155d151c13e80014e58aa34f119d67cb9 SHA-256: 57a2cff5abe7f364120e8396d4eb27f24dc79d19fcae054a3268812582665c27
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as malicious by ClamAV and an ML classifier. It employs an image-only lure, a common tactic for phishing or malware distribution, prompting the user to click an embedded URI. The heuristic 'PDF_IMAGE_LURE' specifically indicates this phishing shape, and the embedded URL points to a suspicious domain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7134

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
  • 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://traffking.ru/strik?utm_term=comparative+superlative+adjective+worksheet+pdf
    • https://cdn-cms.f-static.net/uploads/4387233/norma

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