Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c03dfe7067481ef…

MALICIOUS

PDF

43.7 KB Created: 2018-11-23 08:00:40 +03:00 Authoring application: - (via Acrobat Web Capture 8.0)
MD5: f7634c6a5d8bb75e8b90c9e74a185411 SHA-1: bb88e339822918e48c208c6aa68eb0fb5e8d5716 SHA-256: 8c03dfe7067481ef66bd48030ef33a71b8c121b2f4c4d40945ad3bcf708c3a55
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO poisoning or to distribute malicious content. The ML classifier also flagged this PDF as malicious. The primary attack pattern observed is the creation of a link farm designed to direct users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9171

Heuristics 2

  • 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.
  • 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 http://www.gorillawalker.com/dungeons-dragons-deluxe-dice-d-d-accessory.pdf
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    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://www.aiim.org/pdfa/ns/extension/
    • http://www.aiim.org/pdfa/ns/schema#
    • http://www.aiim.org/pdfa/ns/property#
    • http://www.aiim.org/pdfa/ns/id/