Malicious PDF — malware analysis report

Static analysis result for SHA-256 727c79535f892b28…

MALICIOUS

PDF

33.8 KB Created: 2020-02-08 21:01:33 +03:00 Authoring application: Adobe InDesign CS3 (5.0.2) (via Adobe PDF Library 8.0)
MD5: a23320fa7932dfbb4c950fb52663ba1f SHA-1: 3b44b791217f9d6a5d25b48872bb2b8d08ad3f2e SHA-256: 727c79535f892b282308f41dff3addc4c0ab7581d6fe24778c7440fa8a21cb87
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links all point to PDFs hosted on the domain 'gorillawalker.com'. The ML classifier also flagged this PDF as malicious. The primary attack pattern appears to be SEO manipulation or the distribution of further malicious content via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8529

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/theologie-und-wissenschaft-bei-petrus-aureoli-ein-scholastischer-entwurf-aus.pdf
    • http://www.gorillawalker.com/internetworking-with-tcp-ip-vol-iii-client-server-programming-and.pdf
    • http://www.gorillawalker.com/grammar-writing-student-textbook-grade-4-2014.pdf
    • http://www.gorillawalker.com/dk-readers-atlantis-the-lost-city-level-4-proficient-readers.pdf
    • http://www.gorillawalker.com/introduction-to-applied-quantum-chemistry.pdf
    • http://www.gorillawalker.com/animal-crossing-new-leaf-prima-official-game-guide-prima-official.pdf
    • http://www.gorillawalker.com/bourbon-for-breakfast.pdf
    • http://www.gorillawalker.com/religious-fundamentalism-in-the-contemporary-world-critical-social-and-political.pdf
    • http://www.gorillawalker.com/walt-disney-world-universal-orlando-also-includes-seaworld-and-central.pdf
    • http://www.gorillawalker.com/a-literary-history-of-persia.pdf
    • http://www.gorillawalker.com/therapeutic-counseling-and-psychotherapy-6th-edition.pdf
    • http://www.gorillawalker.com/css-detective-guide-tricks-for-solving-tough-css-mysteries-the.pdf
    • http://www.gorillawalker.com/explicatio-viaggio-verso-le-origini-volume-7-italian-edition.pdf
    • http://www.gorillawalker.com/john-3-16-counted-cross-stich-cross-my-heart-csl.pdf
    • http://www.gorillawalker.com/handbook-of-slope-stabilization-engineering.pdf
    • http://www.gorillawalker.com/in-the-know-in-mexico-central-america-the-indispensable-guide.pdf
    • http://www.gorillawalker.com/so-not-a-cowboy.pdf
    • http://www.gorillawalker.com/the-abominable-snowman-great-unsolved-mysteries.pdf
    • http://www.gorillawalker.com/cantico-del-sol-di-francesco-d-assisi-s-4-2nd.pdf
    • http://www.gorillawalker.com/clinical-trials-in-cancer-principles-and-practice-oxford-medical-publications.pdf
    • http://www.gorillawalker.com/chris-isaak-baja-session-piano-vocal-chords.pdf
    • http://www.gorillawalker.com/undercurrent-a-siren-novel-siren-novels-egmont-usa.pdf
    • http://www.gorillawalker.com/transformation-of-organometallics-into-common-and-exotic-materials-design-and.pdf
    • http://www.gorillawalker.com/stuff-black-people-don-t-like-365-black-days-of.pdf
    • http://www.gorillawalker.com/brit-volume-2-awol.pdf
    • http://www.gorillawalker.com/teacher-training-smart-pages-with-cd-rom-complete-training-materials.pdf
    • http://www.gorillawalker.com/german-shepherds-2016-engagement.pdf
    • http://www.gorillawalker.com/la-fiesta-de-jesus-5-la-eucaristia-es-una-fiesta.pdf
    • http://www.gorillawalker.com/how-to-stage-a-play-make-a-fortune-win-a.pdf
    • http://www.gorillawalker.com/estoppel-by-conduct-and-election.pdf
    • http://www.gorillawalker.com/florida-senior-legal-guide-6th-edition.pdf
    • http://www.gorillawalker.com/party-of-the-people-a-history-of-the-democrats.pdf
    • http://www.gorillawalker.com/gateway-oracle-cards.pdf
    • http://www.gorillawalker.com/tr-bner-s-oriental-series-racial-synthesis-in-hindu-culture.pdf
    • http://www.gorillawalker.com/do-not-cross-no-caution-book-1-kindle-edition.pdf
    • http://www.gorillawalker.com/the-sheik-the-virgin-princess-desert-rogues-series.pdf
    • http://www.gorillawalker.com/insecure-gulf-the-end-of-certainty-and-the-transition-to.pdf
    • http://www.gorillawalker.com/archiv-for-mathematik-og-naturvidenskab-volume-5-danish-edition.pdf
    • http://www.gorillawalker.com/mi-libro-de-cocina-vegana-cocina-natural-spanish-edition.pdf
    • http://www.gorillawalker.com/the-gorge.pdf
    • 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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