Malicious PDF — malware analysis report

Static analysis result for SHA-256 fad3d929952516d0…

MALICIOUS

PDF

30.2 KB Created: 2019-12-13 20:48:29 +03:00 Authoring application: Adobe InDesign CC 2014 (Windows) (via Adobe PDF Library 11.0)
MD5: ce59d760d09edf03b76296aa6cb3d86a SHA-1: 19f046bece5ae086c495fd700cfe1eb55ded6669 SHA-256: fad3d929952516d0320d9b8166b9cf429ad4c6d9b4cb90f00a3e465e51e3bf8c
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs pointing to external documents, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged the PDF as malicious. The document body is heavily obfuscated and does not provide clear instructions, but the sheer volume of links suggests a malicious intent, possibly for SEO manipulation or to distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8800

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/iec-60044-5-ed-1-0-b-2004-instrument-transformers.pdf
    • http://www.gorillawalker.com/30-color-paintings-of-carl-ludwig-johann-christineck-russian-portrait.pdf
    • http://www.gorillawalker.com/fasting-made-easy-rid-your-body-of-harmful-toxins-develop.pdf
    • http://www.gorillawalker.com/queer-theory-readers-in-cultural-criticism.pdf
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    • http://www.gorillawalker.com/microeconomics-quickstudy-business.pdf
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    • http://www.gorillawalker.com/the-oxford-companion-to-american-literature.pdf
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    • http://www.gorillawalker.com/harmony.pdf
    • http://www.gorillawalker.com/automata-universality-computation-tribute-to-maurice-margenstern-emergence-complexity-and.pdf
    • http://www.gorillawalker.com/apprehended-amber-alert-series-book-3-kindle-edition.pdf
    • http://www.gorillawalker.com/handbook-of-electrical-resistivities-of-binary-metallic-alloys.pdf
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    • http://www.gorillawalker.com/el-ataque-de-las-ranas-ninjas-attack-of-the-ninja.pdf
    • http://www.gorillawalker.com/laurell-k-hamilton-meredith-gentry-cd-collection-2-a-stroke.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/