Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb11e32b2a0484c2…

MALICIOUS

PDF

44.4 KB Created: 2018-11-23 21:03:33 +03:00 Authoring application: FrameMaker 9.0 (via Acrobat Distiller 8.1.0 (Windows)) First seen: 2018-12-09
MD5: 05f823f602b94c3fb22fb09531672e0a SHA-1: 2531050459ee27f40b07ee5238da933424fc35aa SHA-256: eb11e32b2a0484c23cccc3b9908618b457ac4992868d9da0259b1218e65b13a8
92 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF contains an embedded URI pointing to a remote PDF file. The ML classifier also flagged this PDF as malicious. The primary attack pattern involves directing the user to an external resource, likely for further exploitation or credential harvesting. No scripts were extracted, limiting the analysis of the immediate execution flow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8439

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.
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    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://www.aiim.org/pdfa/ns/extension/In PDF document text
    • http://www.aiim.org/pdfa/ns/schema#In PDF document text
    • http://www.aiim.org/pdfa/ns/property#In PDF document text
    • http://www.aiim.org/pdfa/ns/id/In PDF document text