Malicious PDF — malware analysis report

Static analysis result for SHA-256 26d36bba6a1517e4…

MALICIOUS

PDF

36.2 KB Created: 2021-09-26 05:06:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: 6a30ba3d90527bb6881e5a59dfdc0168 SHA-1: 5acb7d8c11b4451a385995473c7ed8fb92a9390b SHA-256: 26d36bba6a1517e4fbe9bf7371f2fb6691b7290e985996ef73af3e270c05aea4
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file is identified as malicious by ML classifiers and ClamAV, and exhibits characteristics of a phishing lure. It contains an embedded URI pointing to 'https://crewmak.ru/uplcv?utm_term=hashiriya+drifter+mod+apk+hack', which is likely used to redirect the user to a malicious site. The document's structure, with minimal text and a large image, further supports the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7255

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 https://crewmak.ru/uplcv?utm_term=hashiriya+drifter+mod+apk+hack PDF link annotation
    • http://ghettaetamionarchitetti.it/userfiles/files/sololif.pdfIn PDF document text
    • http://liweisteel.co.th/ckfinder/userfiles/files/nanumosedego.pdfIn PDF document text
    • http://herium.net/FileData/ckfinder/files/20210903_4DD7648F3DB27778.pdfIn PDF document text
    • https://www.stock2morrow.com/ckfinderIn PDF document text