Malicious PDF — malware analysis report

Static analysis result for SHA-256 92f883f2cfa41d69…

MALICIOUS

PDF

36.8 KB Created: 2021-09-09 22:26:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 0a9c40d16c4ae90da112b88f3d55511a SHA-1: 339778f58a88e707509929e915a5f3076dfaacea SHA-256: 92f883f2cfa41d6927cc68b531b08b18df9a6bd6765ae18c9f521e26bdfd4575
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 ClamAV detection and ML classifier further support its malicious classification. The document body is heavily obfuscated, but the presence of embedded URLs suggests an attempt to redirect the user to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7016

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 36 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 http://ceresasrl.it/userfiles/files/dumelejorideni.pdf In PDF document text
    • http://www.vnv.nu/admin/library/ckfinder/userfiles/files/tigaxowobevixitovidalegan.pdfIn PDF document text
    • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16131ad9b2ef03---43514460929.pdfIn PDF document text
    • http://travelspace.pl/userfiles/file/kokuputevatovezopev.pdfIn PDF document text
    • https://alharithiforcameras.com/ckfinder/userfiles/files/91957937290.pdfIn PDF document text
    • http://ctmmaximoravenna.com/ckfinder/userfiles/files/81809475917.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=how+to+see+deleted+messages+on+messenger+androidPDF link annotation

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