Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fe1fe035f62b330…

MALICIOUS

PDF

43.0 KB Created: 2018-11-23 08:00:43 +03:00 Authoring application: ZonBook XSL Stylesheets with Apache FOP (via Apache FOP Version 2.1)
MD5: 02094a2edebf3c27e9bb7491a8546b0d SHA-1: 3686e8c4df2dd056fb4e6db62996fac4b50a337e SHA-256: 9fe1fe035f62b33089ef639aea743ee21bfd9f5331df395c54be93911bc0b74d
90 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded URLs pointing to various PDF files on the same domain. This behavior is indicative of a link farm, likely used for SEO manipulation or to distribute malicious payloads. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine the exact user-facing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9027

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/dao-de-jing.pdf
    • http://www.gorillawalker.com/real-property-bar-exam-review.pdf
    • http://www.gorillawalker.com/review-of-the-work-of-mr-john-stuart-mill-entitled.pdf
    • http://www.gorillawalker.com/alpha-awakening.pdf
    • http://www.gorillawalker.com/sonata-for-cello-and-piano.pdf
    • http://www.gorillawalker.com/kids-drawing-power-pack-the-power-pack-kids-drawing-books.pdf
    • http://www.gorillawalker.com/retornos-solares-y-lunares-dirigidos-qu-puedes-hacer-cuando-no.pdf
    • http://www.gorillawalker.com/tao-te-ching-bilingual-version-chinese-edition.pdf
    • http://www.gorillawalker.com/on-cooking-a-textbook-of-culinary-fundamentals-5th-edition.pdf
    • http://www.gorillawalker.com/seeing-religion-toward-a-visual-sociology-of-religion-routledge-advances.pdf
    • http://www.gorillawalker.com/ralph-vaughan-williams-six-studies-in-english-folksong-for-bassoon.pdf
    • http://www.gorillawalker.com/canon-eos-rebel-t6i-750d-for-dummies-for-dummies-computer.pdf
    • http://www.gorillawalker.com/up-to-you-vol-1-just-the-beginning-volume-1.pdf
    • http://www.gorillawalker.com/an-other-kind-of-home-gender-sexual-abjection-subjectivity-and.pdf
    • http://www.gorillawalker.com/rick-steves-spain-and-portugal-covers-madrid-barcelona-andalucia-lisbon.pdf
    • http://www.gorillawalker.com/pocket-mini-reference-thesaurus.pdf
    • http://www.gorillawalker.com/galle-lamps.pdf
    • http://www.gorillawalker.com/lecciones-b-blicas-creativas-para-j-venes-sobre-romanos.pdf
    • http://www.gorillawalker.com/familyfun-s-parties-100-party-plans-for-birthdays-holidays-every.pdf
    • http://www.gorillawalker.com/building-web-apps-with-wordpress.pdf
    • http://www.gorillawalker.com/managing-space-international-space-law-and-prospective-reforms-features-company.pdf
    • http://www.gorillawalker.com/hospitality-and-tourism-synergizing-creativity-and-innovation-in-research.pdf
    • http://www.gorillawalker.com/inn-at-last-chance.pdf
    • http://www.gorillawalker.com/chemistry-connections-to-our-changing-world.pdf
    • http://www.gorillawalker.com/clinical-co-management-a-bridge-to-clinical-integration-and-pathway.pdf
    • http://www.gorillawalker.com/moscow-diary.pdf
    • http://www.gorillawalker.com/making-music-student-book.pdf
    • http://www.gorillawalker.com/microgroove-forays-into-other-music.pdf
    • http://www.gorillawalker.com/enriques-surfaces-i-progress-in-mathematics.pdf
    • http://www.gorillawalker.com/the-sense-of-agency-social-cognition-and-social-neuroscience.pdf
    • http://www.gorillawalker.com/the-caine-mutiny-unabridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/study-guide-for-the-nata-board-of-certification-including-entry.pdf
    • http://www.gorillawalker.com/the-civil-war-a-narrative-fort-sumter-to-perryville-vol.pdf
    • http://www.gorillawalker.com/righteous-bible-cover-purple-floral-faux-fur-medium.pdf
    • http://www.gorillawalker.com/river-cottage-diary-2011.pdf
    • http://www.gorillawalker.com/carta-s-atlas-of-the-bible.pdf
    • http://www.gorillawalker.com/foreign-babes-in-beijing-behind-the-scenes-of-a-new.pdf
    • http://www.gorillawalker.com/hammond-discovery-world-atlas.pdf
    • http://www.gorillawalker.com/the-hejaz-railway-and-the-muslim-pilgrimage-a-case-of.pdf
    • http://www.gorillawalker.com/the-circus-of-adventure-adventure-series.pdf
    • http://www.gorillawalker.com
    • 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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