Malicious PDF — malware analysis report

Static analysis result for SHA-256 4034990647722976…

MALICIOUS

PDF

35.6 KB Created: 2021-06-08 16:56:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: f4e67318dc9615c9e136961aac636ec6 SHA-1: 2d022b0adb4274108f92b45d5603ecccbeb3cb28 SHA-256: 40349906477229766fa9574a98bc6fc8ef27a4a9b35e857a7a9a829a41836fee
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a phishing lure due to its image-only nature and embedded clickable link. The heuristic PDF_IMAGE_LURE indicates a typical phishing shape, and the external URI points to a suspicious domain. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6860

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://oniceh.ru/uplcv?utm_term=personalised+twas+the+night+before+christmas PDF link annotation
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/06ebeecdb582e2c4f50892f2a6cfbe86/87716214910.pdfIn PDF document text
    • http://verkoop-je-wagen.be/In PDF document text

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