Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad2b11a645aff5bc…

MALICIOUS

PDF

51.0 KB Created: 2021-05-06 18:04:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f649aafb35f315954befde6f31a45b44 SHA-1: 18d931d3177afd9b997e529649ef7903bd9c2021 SHA-256: ad2b11a645aff5bc1721b512450e9cb72999d9999561434b0a62277c11d4f7ae
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan distribution attempt. It contains numerous external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious sites. One prominent URL, 'https://golowaki.ru/strik?utm_term=dyson+cinetic+big+ball+brush+bar+not+spinning', appears to be a lure related to a specific product search, likely intended to trick users into clicking through to a compromised or malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9372

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://golowaki.ru/strik?utm_term=dyson+cinetic+big+ball+brush+bar+not+spinning PDF link annotation
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