Malicious PDF — malware analysis report

Static analysis result for SHA-256 717b4810b7b7233c…

MALICIOUS

PDF

43.8 KB Created: 2019-01-06 08:09:48 +03:00 Authoring application: LaTeX with hyperref package (via xdvipdfmx)
MD5: b5d167f31c5e05485f1f826380ddb86e SHA-1: a86df3999e421b35436e5d4055051b7ce95a87b1 SHA-256: 717b4810b7b7233c0438e3857046cb42f6dafb9467a8897508d017eb7fd5088b
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files on the same domain, as indicated by the 'PDF_SEO_LINK_FARM' heuristic. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the sheer volume of links suggests an attempt to manipulate search engine rankings or to serve as a distribution point for other malicious documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9171

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/hildebrand-s-travel-map-jamaica-caribbean-central-america-german-edition.pdf
    • http://www.gorillawalker.com/language-development-an-introduction-with-enhanced-pearson-etext-access-card.pdf
    • http://www.gorillawalker.com/the-language-of-love-respect-cracking-the-communication-code-with.pdf
    • http://www.gorillawalker.com/atrapados-c.pdf
    • http://www.gorillawalker.com/golden-mountain-beyond-the-american-dream.pdf
    • http://www.gorillawalker.com/developing-affordable-housing-a-practical-guide-for-nonprofit-organizations-wiley.pdf
    • http://www.gorillawalker.com/the-king-s-buccaneer-riftwar-cycle-krondor-s-sons.pdf
    • http://www.gorillawalker.com/light-after-darkness-experience-of-nicaragua.pdf
    • http://www.gorillawalker.com/leopards-kill.pdf
    • http://www.gorillawalker.com/star-wars-saga-2015-premium-wall-calendar.pdf
    • http://www.gorillawalker.com/money-and-the-real-world.pdf
    • http://www.gorillawalker.com/retirement-communities-an-american-original.pdf
    • http://www.gorillawalker.com/curriculum-design-and-classroom-management-concepts-methodologies-tools-and-applications.pdf
    • http://www.gorillawalker.com/classical-relativistic-electrodynamics-theory-of-light-emission-and-application-to.pdf
    • http://www.gorillawalker.com/iml-veterinary-pharmacology.pdf
    • http://www.gorillawalker.com/the-chosen-one.pdf
    • http://www.gorillawalker.com/system-of-a-down-hypnotize-guitar-recorded-versions.pdf
    • http://www.gorillawalker.com/beginning-opengl-game-programming-kindle-edition.pdf
    • http://www.gorillawalker.com/early-jurassic-pterosaur-dorygnathus-banthensis-theodori-1830-and-the-early.pdf
    • http://www.gorillawalker.com/bang-the-keys-four-steps-to-a-lifelong-writing-practice.pdf
    • http://www.gorillawalker.com/understanding-trauma-integrating-biological-clinical-and-cultural-perspectives.pdf
    • http://www.gorillawalker.com/investing-in-authoritarian-rule-punishment-and-patronage-in-rwanda-s.pdf
    • http://www.gorillawalker.com/mapping-tonal-harmony-workbook-5-chords-functions-and-progressions-in.pdf
    • http://www.gorillawalker.com/los-seis-ciegos-y-el-elefante-the-blind-men-and.pdf
    • http://www.gorillawalker.com/follow-her-home-juniper-song-mysteries.pdf
    • http://www.gorillawalker.com/case-s-bible-atlas-to-illustrate-the-old-and-new.pdf
    • http://www.gorillawalker.com/james-brothers-responsible-cowboy-grace-s-cowboys-siren-publishing-polyamour.pdf
    • http://www.gorillawalker.com/around-the-world-in-a-bad-mood-confessions-of-a.pdf
    • http://www.gorillawalker.com/the-complete-potter-slips-and-slipware.pdf
    • http://www.gorillawalker.com/borders-a-very-short-introduction-very-short-introductions.pdf
    • http://www.gorillawalker.com/baptism-being-a-child-s-godparent-all-you-need-to.pdf
    • http://www.gorillawalker.com/great-buildings.pdf
    • http://www.gorillawalker.com/by-trends-horses-2014-calendar-wal-calendar.pdf
    • http://www.gorillawalker.com/breeze-easy-drums-book-1.pdf
    • http://www.gorillawalker.com/musculoskeletal-imaging-cases.pdf
    • http://www.gorillawalker.com/on-the-road-2-chinese-edition.pdf
    • http://www.gorillawalker.com/rachel-barton-pine-collection-origl-compositions-arrange-cadenzas-and-editions.pdf
    • http://www.gorillawalker.com/fountainhead-of-jihad-the-haqqani-nexus-1973-2012-kindle-edition.pdf
    • http://www.gorillawalker.com/yeast-protocols-methods-in-molecular-biology.pdf
    • http://www.gorillawalker.com/doctor-who-short-trips-the-centenarian-a-short-story-anthology.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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