Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd326853c5554e39…

MALICIOUS

PDF

34.1 KB Created: 2019-05-24 00:42:29 +03:00 Authoring application: AH XSL Formatter V6.2 MR5 for Windows (x64) : 6.2.7.18952 (via Antenna House PDF Output Library 6.2.625 (Windows (x64)))
MD5: c0cd0b921c59664c253766684ad078f6 SHA-1: 01b5f72f514d827c011d9554396ae61e0b847c75 SHA-256: fd326853c5554e395e7a57f5d7348f8fb4b7d12257a19c66a6914e256766ff1c
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links pointing to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted, and the document body was not parsable.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8313

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/holiday-tales-of-sholom-aleichem-a-146.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/

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