Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8d3ecc56e29942b…

MALICIOUS

PDF

120.6 KB Created: 2021-01-14 23:51:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 4aff88d7ea607f6a455089eadda28de7 SHA-1: 2d9b6425ca4105becacbfde21b7157c75456cc5a SHA-256: c8d3ecc56e29942b015b97490e72600bbc0af9ae606ca9e7c14a805579a180a1
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains embedded links that redirect to a known malicious domain, indicating a phishing or malware distribution attempt. The ClamAV detection further confirms its malicious nature. The document body and metadata suggest a lure designed to trick users into clicking the link, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier clean score 0.1082

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
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=difficult+spelling+words+for+grade+10+pdf In PDF document text

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