Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4977ab972ccb2d1…

MALICIOUS

PDF

35.8 KB Created: 2021-05-06 21:47:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 587145f196685dfa0dda4ebe376dcb22 SHA-1: d48e1b79fcd99edf0ca15fbfe0d870c64d29f0ba SHA-256: e4977ab972ccb2d104311746f54aa0d1958dc6ca7030406e6a19cb32c06df536
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, typical for phishing attacks, designed to trick users into clicking embedded links. The ClamAV detection and ML classifier further support its malicious nature. The embedded URLs, while one is confirmed benign, point towards potential redirection to malicious sites for further payload delivery or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6860

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 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://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/160747caca7d02---62720704386.pdf In PDF document text
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/0cIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=cbs+local+program+guidePDF link annotation

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