Malicious PDF — malware analysis report

Static analysis result for SHA-256 9adc3fabb7f7e96c…

MALICIOUS

PDF

74.9 KB Created: 2021-03-30 12:09:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 766e4e1ce647ea096ea28099dadfff82 SHA-1: 0b48dd1c5252cc4f64afcacecfee6900b77ae399 SHA-256: 9adc3fabb7f7e96c90f1115aa71bc2b5c6020bc42e5a63172f553c92fd4c2495
64 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, many pointing to disposable domains, indicating a link farm or SEO abuse tactic. The ML classifier also flagged the PDF as malicious. While no scripts were extracted, the presence of embedded URIs and the overall structure suggest an attempt to redirect users to potentially malicious sites, possibly as part of a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7551

Heuristics 3

  • 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://xezojetit.ru/award?keyword=o+alienista+caleb+carr+pdf+gratis PDF link annotation
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    • https://cdn.sqhk.co/nawiwola/FF0ibkG/memobexawilizowam.pdfIn PDF document text
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