Malicious PDF — malware analysis report

Static analysis result for SHA-256 03d51a1334c69b6e…

MALICIOUS

PDF

38.1 KB Created: 2021-10-03 12:00:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: 57af30c86765905096891f3c61d46e14 SHA-1: 5030c6ea05029630f39377c2df3f71695852726f SHA-256: 03d51a1334c69b6e9f238bbb3cb3a9a51ade0e1e499dbf39dea185768fe16dde
84 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document is identified as an image-based lure, a common tactic for phishing or malware distribution. It contains an external URI pointing to 'pistant.ru', and several other suspicious URLs were extracted. ClamAV also detected this file as 'Pdf.Phishing.Trojan'. The combination of these factors strongly suggests a malicious intent to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4307

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 38 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://pistant.ru/uplcv?utm_term=mca+oral+questions+and+answers PDF link annotation
    • http://zevkotodoseme.com/upload/ckfinder/files/sonudirezesikinor.pdfIn PDF document text
    • http://gayaarchi.com/userfiles/file/20210923072804.pdfIn PDF document text
    • http://cascinamana.it/userfiles/file/67212730036.pdfIn PDF document text
    • http://mamnonhieutrung.edu.vn/ckfinder/userfiles/files/mirogexuvi.pdfIn PDF document text
    • http://sanarina-coaching.de/ckfinder/userfiles/files/pojuvo.pdfIn PDF document text
    • http://ndc-group.ru/uploads/files/48656735501.pdfIn PDF document text

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