Malicious PDF — malware analysis report

Static analysis result for SHA-256 d482ffd8c350057f…

MALICIOUS

PDF

46.2 KB Created: 2018-12-02 10:57:26 +03:00 Authoring application: Microsoft Word (via Acrobat PDFWriter 4.05 for Windows NT)
MD5: a70b6bdf0cdaacd9bbfd93807444f6da SHA-1: 107d6131b8b544890b3e6ae3012b196ae6f29746 SHA-256: d482ffd8c350057fca710baafd92b8e4e31847dd362ce8a694686f619ea66488
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged the document as malicious. The embedded URLs likely serve to manipulate search engine rankings or to distribute additional malicious content, although no specific payload delivery mechanism was identified within the document body itself.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7914

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/tales-from-dayrut-short-stories.pdf
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    • http://www.gorillawalker.com/modelling-and-control-of-robot-manipulators-advanced-textbooks-in-control.pdf
    • http://www.gorillawalker.com/of-making-many-books.pdf
    • http://www.gorillawalker.com/spon-s-mechanical-and-electrical-services-price-book-2000-spon.pdf
    • http://www.gorillawalker.com/mathematical-analysis-for-business-and-economics-2e-custom-version-for.pdf
    • http://www.gorillawalker.com/dynamics-of-structure-and-foundation-a-unified-approach-1-fundamentals.pdf
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    • http://www.gorillawalker.com/the-art-of-manliness-classic-skills-and-manners-for-the.pdf
    • http://www.gorillawalker.com/nuqteh-vol-ii-a-new-easy-and-effective-method-to.pdf
    • http://www.gorillawalker.com/murder-comes-unraveled-a-flock-and-fiber-mystery.pdf
    • http://www.gorillawalker.com/aging-research-methodological-issues.pdf
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    • http://www.gorillawalker.com/the-trust-factor-negotiating-in-smartnership.pdf
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    • http://www.gorillawalker.com/the-pen-commandments-a-guide-for-the-beginning-writer.pdf
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    • http://www.gorillawalker.com/conversations-on-servant-leadership-insights-on-human-courage-in-life.pdf
    • http://www.gorillawalker.com/analog-signals-and-systems.pdf
    • http://www.gorillawalker.com/snorkel-jamaica-sites-seen-below-the-surface-kindle-edition.pdf
    • http://www.gorillawalker.com/polin-studies-in-polish-jewry-volume-25-jews-in-the.pdf
    • http://www.gorillawalker.com/encyclopedia-of-electronic-circuits-vol-4-cloth.pdf
    • http://www.gorillawalker.com/salzburg-in-spasms.pdf
    • http://www.gorillawalker.com/can-a-bee-sting-a-bee-and-other-big-questions.pdf
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    • http://www.gorillawalker.com/servsafe-manager-with-answer-sheet-revised-6th-edition.pdf
    • http://www.gorillawalker.com/why-elders-a-biblical-and-practical-guide-for-church-members.pdf
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    • http://www.gorillawalker.com/how-to-cope-with-narcissistic-and-psychopathic-abusers-and-stalkers.pdf
    • http://www.gorillawalker.com/vikings-history-dudes.pdf
    • http://www.gorillawalker.com/the-drama-of-the-resurrection-transforming-christianity.pdf
    • http://www.gorillawalker.com/spon-s-me
    • 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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