Malicious PDF — malware analysis report

Static analysis result for SHA-256 72079863aca0c3e1…

MALICIOUS

PDF

36.2 KB Created: 2021-10-10 04:51:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: da51c2420ae4f75670576473fe5ed19d SHA-1: 177b0006e75f5179f2af00d595440eb6b0f00719 SHA-256: 72079863aca0c3e136aee124d768de6abfef495690cffa6a4a673fc20f17e5c7
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was identified as an image-only lure, a common phishing technique where a screenshot is presented as a document with a clickable element. This element redirects to external URLs, one of which is associated with a phishing detection. The ClamAV detection and ML classifier further support its malicious nature, likely serving as a phishing document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7086

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 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 https://propbrains.com/wp-content/plugins/super-forms/uploads/php/files/072e10c1508e7e01492b97a13f298780/lokomuduf.pdf In PDF document text
    • http://studiosantese.eu/userfiles/files/niboruzup.pdfIn PDF document text
    • https://visualmotion.nl/uploads/file/10030446012.pdfIn PDF document text
    • https://rezilta.com/psum/admin/userfiles/fiIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=number+of+atoms+per+molePDF link annotation

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