Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a27b87c24c19389…

MALICIOUS

PDF

35.6 KB Created: 2020-11-13 05:30:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c2d49f4ad6e944844852bc52b47faaa SHA-1: 7f2b777b5e2ab2407a8b0271c98a139ed983d3c6 SHA-256: 1a27b87c24c193898ad35016da2fb8c01ba82fdd4411b38c83e6ae8e819d1597
172 Risk Score

Malware Insights

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

The PDF is identified as malicious due to heuristics indicating it's an image-only lure designed to trick users into clicking a link. The embedded URL, https://traffmen.ru/aws?utm_term=affairscloud+weekly+pdf, is flagged as a known malicious redirector. This suggests the document's primary purpose is to redirect users to a malicious site for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6975

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 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.
  • 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://traffmen.ru/aws?utm_term=affairscloud+weekly+pdf

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