Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d01c656a340daa2…

MALICIOUS

PDF

44.0 KB Created: 2018-11-26 08:36:39 +03:00 Authoring application: FrameMaker 12.0.4 (via Acrobat Distiller 11.0 (Windows))
MD5: 6c1483f89d2d4706e08aac5915c0c709 SHA-1: 3d1b35ef1b7a0b226a6301395a40387eb2033808 SHA-256: 5d01c656a340daa271dbcf896b91176fc42dd953142dce1d3b4fb76d4182f3a3
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML_NYX_PDF_MALICIOUS classifier also flagged the document with high confidence. The embedded URLs likely serve to direct users to potentially malicious or unwanted content, possibly as part of a link-farming or SEO-poisoning scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9016

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/preggo-springs-gender-transformation-erotica-kindle-edition.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/