Malicious PDF — malware analysis report

Static analysis result for SHA-256 207b983494ed1a8c…

MALICIOUS

PDF

36.2 KB Created: 2021-09-16 08:04:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: e1b48e0bd47f79e793bb0169093d7b84 SHA-1: 6d02903b444315887886fbf296c3f0c2606ed994 SHA-256: 207b983494ed1a8c71b7c67979ed8211c3512f887cc233a549cae0dc9ef6dc51
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was identified as malicious by ML classifiers and ClamAV, with a 'medium' heuristic firing indicating it's an image-based lure. The document body is heavily obfuscated, but the presence of embedded URLs suggests an attempt to redirect the user to malicious sites. The primary attack vector appears to be a phishing attachment, with potential for further exploitation via embedded scripts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7335

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 36 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://altadirezione-consulting.it/userfiles/files/begel.pdf In PDF document text
    • http://www.gonouvellezelande.com/files/11343969654.pdfIn PDF document text
    • http://tumakuruvoice.com/tumkurvoice/ckeditor/ckfinder/userfiles/files/26275570080.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=antutu+benchmark+comparisonPDF link annotation

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