Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a534cae5be68dd5…

MALICIOUS

PDF

35.6 KB Created: 2020-11-11 22:11:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 658a5ba7bd32e87b4d96cc60322acfaa SHA-1: 7f245a3962a75284fb98633992dfb357fa8e86fd SHA-256: 1a534cae5be68dd5bc28c2fc0c4b0994c32e25a4cfbb0f17b2e02d6b5aa32a71
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 delivery. The embedded URL, 'https://trafffe.ru/aws?utm_term=acknowledgment+of+service+divorce+form', is the primary indicator of compromise, likely leading to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7668

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://trafffe.ru/aws?utm_term=acknowledgment+of+service+divorce+form

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