Malicious PDF — malware analysis report

Static analysis result for SHA-256 8237ae5fa29f86fa…

MALICIOUS

PDF

44.6 KB Created: 2019-02-12 19:46:48 +03:00 Authoring application: - (via Acrobat Distiller 5.0 (Windows))
MD5: a43fbe7b33ffabb9903992ff1f77200b SHA-1: 91a5e3b0ae46067dfe34fb73451cd09ddb3c4640 SHA-256: 8237ae5fa29f86faa9116bd22ca0b836da31d7017b25b22d8b00cb7a0fffd7f5
90 Risk Score

Malware Insights

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

The PDF heuristic 'PDF_SEO_LINK_FARM' indicates the presence of 32 external links, many of which are likely intended for SEO spam or to lure users to malicious sites. The ML classifier also flagged this PDF as malicious with a high probability. The document body contains numerous URLs pointing to the domain 'gorillawalker.com', reinforcing the link farm attack pattern. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9007

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/keeping-the-good-light-laurel-leaf-books.pdf
    • http://www.gorillawalker.com/an-act-to-amend-subpart-2-of-part-b-of.pdf
    • http://www.gorillawalker.com/fodor-s-barcelona-3rd-edition-with-highlights-of-catalonia-bilbao.pdf
    • http://www.gorillawalker.com/a-blueprint-for-revival-lessons-from-the-life-of-john.pdf
    • http://www.gorillawalker.com/bates-guide-to-physical-examination-and-history-taking-eighth-edition.pdf
    • http://www.gorillawalker.com/assassination-at-sarajevo-the-spark-that-started-world-war-i.pdf
    • http://www.gorillawalker.com/master-thomas-aquinas-and-the-fullness-of-life.pdf
    • http://www.gorillawalker.com/apartment-feng-shui-the-basics-of-feng-shui-for-your.pdf
    • http://www.gorillawalker.com/m-s-all-de-lo-imposible-c-mo-llevar-a.pdf
    • http://www.gorillawalker.com/power-electronics-and-motor-drives-advances-and-trends.pdf
    • http://www.gorillawalker.com/crocheting-adventures-with-hyperbolic-planes.pdf
    • http://www.gorillawalker.com/the-absolutely-worst-places-to-live-in-america-kindle-edition.pdf
    • http://www.gorillawalker.com/traffic-engineering-with-mpls-networking-technology-kindle-edition.pdf
    • http://www.gorillawalker.com/rwanda-provincial-wall-maps.pdf
    • http://www.gorillawalker.com/french-word-search-puzzles-50-fun-ways-to-build-your.pdf
    • http://www.gorillawalker.com/wicked-featuring-the-sunday-times-bestselling-author-of-bared-to.pdf
    • http://www.gorillawalker.com/enfermer-a-gerontol-gica-cuidados-integrales-del-adulto-mayor-2e.pdf
    • http://www.gorillawalker.com/who-s-who-among-african-americans-biography-denmark-robert-richard.pdf
    • http://www.gorillawalker.com/causes-and-effects-of-conflicts-ib-history-course-book-oxford.pdf
    • http://www.gorillawalker.com/21st-century-ultimate-guide-to-wind-energy-wind-power-systems.pdf
    • http://www.gorillawalker.com/photograph-album-of-travels-through-china-japan-korea-manchuria-and.pdf
    • http://www.gorillawalker.com/travels-into-the-interior-of-africa.pdf
    • http://www.gorillawalker.com/windows-2000-registry-little-black-book-2nd-ed.pdf
    • http://www.gorillawalker.com/abortion-social-issues-firsthand.pdf
    • http://www.gorillawalker.com/mathematical-methods-in-physics-distributions-hilbert-space-operators-and-variational.pdf
    • http://www.gorillawalker.com/let-s-draw-noah-s-ark-let-s-draw.pdf
    • http://www.gorillawalker.com/biological-religion-an-essay-in-criticism-of-professor-henry-drummond.pdf
    • http://www.gorillawalker.com/maggie-a-girl-of-the-streets-norton-critical-editions.pdf
    • http://www.gorillawalker.com/the-little-book-of-sitcom-unabridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/holacracy-the-new-management-system-for-a-rapidly-changing-world.pdf
    • http://www.gorillawalker.com/seeing-gray-participant-s-guide-where-faith-politics-meet-participant.pdf
    • http://www.gorillawalker.com/girls-to-the-rescue-7-stormy-flight-8-inspiring-stories.pdf
    • http://www.gorillawalker.com/conquering-arthritis-what-doctors-don-t-tell-you-because-they.pdf
    • http://www.gorillawalker.com/la-cocina-de-mercado-spanish-edition.pdf
    • http://www.gorillawalker.com/essentials-of-music-theory-complete-book-alto-clef-viola-edition.pdf
    • http://www.gorillawalker.com/first-aid-for-the-emergency-medicine-boards-2-e-first.pdf
    • http://www.gorillawalker.com/genesis-and-the-big-bang-the-discovery-of-harmony-between.pdf
    • http://www.gorillawalker.com/funny-wedding-speeches-77-collections-for-the-bride-groom-parents.pdf
    • http://www.gorillawalker.com/the-sari.pdf
    • http://www.gorillawalker.com/the-futa-next-door-futanari-first-time-erotica.pdf
    • http://www.gorillawalker.com/m-s-all-de-l
    • 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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