Malicious PDF — malware analysis report

Static analysis result for SHA-256 324f1d144f7688f7…

MALICIOUS

PDF

55.6 KB Created: 2021-01-28 13:31:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 6a27d75d4784e86ff45d473524e5f5fb SHA-1: c0de10be748f3327e8b8ceb25f53a9cd64a82237 SHA-256: 324f1d144f7688f776735c4580ccb034a82ec0b3c186b5ac9939627e83c54e14
252 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links designed to farm SEO traffic, redirecting users to malicious infrastructure. The primary malicious link identified is 'https://yafferge.ru/123?utm_term=manual+food+processor+pampered+chef+recipes', which is associated with phishing and malicious redirector activity. ClamAV also detected this file as 'Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0', further indicating malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6975

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://yafferge.ru/123?utm_term=manual+food+processor+pampered+chef+recipes In PDF document text
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    • https://static.s123-cdn-static.com/uploads/4369912/normal_5ff7704430130.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381294/normal_5fd191505717a.pdfIn PDF document text
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