Malicious PDF — malware analysis report

Static analysis result for SHA-256 d03165fd7b8e9021…

MALICIOUS

PDF

35.8 KB Created: 2021-09-08 03:54:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 49dcee163318f3a04f9f795f7884c9ad SHA-1: 3d12482794907e6252f8db0e0f0d6e3a90678692 SHA-256: d03165fd7b8e9021b8d2f48f9ec8e581efcd5cc95a7d501d168c71234acb3b7f
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only document designed as a phishing lure, typical of a screenshot masquerading as a clickable button. It contains an embedded URI that points to a potentially malicious PDF hosted on a compromised domain. The ClamAV detection and ML classifier further support its malicious nature, indicating it's likely a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7601

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 http://purpledoorchurch.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fd97a74949---sutoxabe.pdf In PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=challenging+questions+worksheet+examplePDF link annotation

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