Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a3ae865d775d0f0…

MALICIOUS

PDF

36.5 KB Created: 2021-05-25 06:29:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 409cfd3578c0f4ec98c1cbcf4c4d8884 SHA-1: 854e4996a2e80ebbc746aedb39439990ade7ecfa SHA-256: 8a3ae865d775d0f074902da518ee30e847445ae3cf711435be0bfe2e549779da
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of a phishing lure. The 'PDF_IMAGE_LURE' heuristic indicates it's an image-based document with a clickable action, designed to trick users into interacting with an embedded URL. While no scripts were extracted, the presence of external URIs suggests a redirection to a malicious site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7354

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://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fb6be37114---88798421055.pdf In PDF document text
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091dc69be0f0--In PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=amazon+fire+stick+2nd+generation+pricePDF link annotation

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