Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c4c0c869a84ce2a…

MALICIOUS

PDF

35.9 KB Created: 2021-06-26 04:58:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 69bcb81ca1b78c9fe565aa9afbdcd27f SHA-1: 7929921501dcda010a952b080af51099de3f9e16 SHA-256: 1c4c0c869a84ce2aa335e13feb86f7cec4628d75ae450c0a4f2fe0a3562864c2
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was identified as malicious by ClamAV and an ML classifier, with heuristics indicating it's an image-only document designed as a lure. The presence of embedded URLs, one of which points to a PDF hosted on a suspicious domain, suggests it's intended to redirect users to a malicious site for phishing or further payload delivery. No scripts were extracted, but the overall structure points to a common phishing or malware distribution tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7874

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://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c95f1e01c22---99043970707.pdf In PDF document text
    • http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609428b4d1b3c---dujisosikowopowibutozor.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=sample+lease+termination+letter+to+landlordPDF link annotation

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