Malicious PDF — malware analysis report

Static analysis result for SHA-256 275b47d77cdaabab…

MALICIOUS

PDF

69.5 KB Created: 2021-03-20 22:21:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 19c0052390356b3a272b2c97c065a286 SHA-1: d75cf391fa7b74067eafc2cf5af4e85d6295796b SHA-256: 275b47d77cdaabab26fe7935ebd70d8d7d8b36d1506f8ea2ee7db490a0a6d567
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains an image lure, a common phishing tactic, and a critical heuristic indicates it links to known malicious redirector infrastructure. The embedded URL, https://yafferge.ru/award?keyword=ansys+beam+tutorial+pdf, is the primary indicator of malicious activity, likely serving as a gateway to further malicious content or malware.

Machine Learning

  • Nyx PDF Classifier clean score 0.1727

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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 69 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://yafferge.ru/award?keyword=ansys+beam+tutorial+pdf