Malicious PDF — malware analysis report

Static analysis result for SHA-256 73ac8cfa784928fd…

MALICIOUS

PDF

37.3 KB Created: 2021-09-25 00:32:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 01e3e0de79b8299a5f8d069dc5abd5d3 SHA-1: 5df5c41b547eec453a44ddd4ccd73e98f4cb66a9 SHA-256: 73ac8cfa784928fda4b317c9a9109c34af3c05e2ee1c3f1d88bbaaf3af3d10d6
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, typical for phishing or malware distribution. It contains multiple embedded URLs pointing to potentially malicious PDF files. The ClamAV detection and ML classifier further support its malicious nature, indicating it's likely a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8472

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 37 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://coral-travel66.ru/admin/ckfinder/userfiles/files/10428284127.pdf In PDF document text
    • https://delta-relay.be/userfiles/file/vidafivebomixavuga.pdfIn PDF document text
    • http://wsm.hk/images/uploadfiles/file/46197188945.pdfIn PDF document text
    • https://muzeumkonstancina.pl/attachments/file/dapanexubumilefovaxi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=popcorn+time+pc+2021PDF link annotation

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