Malicious PDF — malware analysis report

Static analysis result for SHA-256 99ce358081a2aebb…

MALICIOUS

PDF

35.9 KB Created: 2021-09-06 15:09:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-04
MD5: 592bf8e4a8d74928c9cb8d9136ae4d39 SHA-1: e65a32b24b76520b3f0c4eaf2c522eb6da8b46a0 SHA-256: 99ce358081a2aebb1d404733da412ce517b64bbcf326f0b6c435bb5ecb3efea0
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file uses an image-based lure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7731

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://cructi.ru/uplcv?utm_term=different+types+of+multiplexing+pdf PDF link annotation
    • https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/aaa82f3701246f65f1a954f96f508e52/54439634484.pdfIn PDF document text
    • https://transport.frontiermyanmar.com/sites/all/libraries/ckfinder/userfiles/files/58239998566.pdfIn PDF document text

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