Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8f6b4d557a18dcf…

MALICIOUS

PDF

44.3 KB Created: 2018-11-23 08:08:03 +03:00 Authoring application: Microsoft Word 8.0 (via Acrobat Distiller 4.0 for Windows)
MD5: ab84c5c095c76292a6ff6462f4315d68 SHA-1: cc1a3c9b17cd37b9ff12faf43fba6d0fd1bf444f SHA-256: b8f6b4d557a18dcf8481467bc1f822956d4beca35ab08f2dfa9b3b59adf40ae3
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF contains a large number of embedded links pointing to external PDF files on the domain 'gorillawalker.com'. This behavior is indicative of a link farm, likely used for SEO manipulation or to distribute potentially malicious content. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, and the document body was heavily obfuscated.

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/short-bike-rides-in-new-jersey.pdf
    • http://www.gorillawalker.com/sexual-life-in-ottoman-society.pdf
    • http://www.gorillawalker.com/101-quantum-questions.pdf
    • http://www.gorillawalker.com/ansel-adams-2015-engagement-calendar-by-ansel-adams.pdf
    • http://www.gorillawalker.com/grace-like-a-river-an-autobiography.pdf
    • http://www.gorillawalker.com/erotic-comics-volume-2.pdf
    • http://www.gorillawalker.com/lift-every-voice-and-sing-ii-an-african-american-hymnal.pdf
    • http://www.gorillawalker.com/how-to-maximize-your-manhood-what-every-red-blooded-male.pdf
    • http://www.gorillawalker.com/let-s-get-visible-how-to-get-noticed-and-sell.pdf
    • http://www.gorillawalker.com/happy-birthday-mad-libs.pdf
    • http://www.gorillawalker.com/the-world-of-indicators-the-making-of-governmental-knowledge-through.pdf
    • http://www.gorillawalker.com/the-summer-shack-cookbook-the-complete-guide-to-shore-food.pdf
    • http://www.gorillawalker.com/sorry-dear-but-i-got-horny-4.pdf
    • http://www.gorillawalker.com/conversaciones-creadoras-student-in-text-audio-cd-spanish-edition.pdf
    • http://www.gorillawalker.com/anarchist-periodicals-in-english-published-in-the-united-states-1833.pdf
    • http://www.gorillawalker.com/i-am-a-monument-on-learning-from-las-vegas.pdf
    • http://www.gorillawalker.com/teammates-karl-malone-and-john-stockton.pdf
    • http://www.gorillawalker.com/the-sultan-s-organ-london-to-constantinople-in-1599-and.pdf
    • http://www.gorillawalker.com/side-chick-potion.pdf
    • http://www.gorillawalker.com/jung-and-the-postmodern-the-interpretation-of-realities.pdf
    • http://www.gorillawalker.com/sport-for-development-what-game-are-we-playing.pdf
    • http://www.gorillawalker.com/european-road-trip-journal-armenia-flag-cover-s-m-road.pdf
    • http://www.gorillawalker.com/nist-janaf-thermochemical-tables-2-volume-set-journal-of-physical.pdf
    • http://www.gorillawalker.com/the-world-of-athens-an-introduction-to-classical-athenian-culture.pdf
    • http://www.gorillawalker.com/biological-psychology-an-introduction-to-behavioral-cognitive-and-clinical-neuroscience.pdf
    • http://www.gorillawalker.com/the-philosophy-of-the-upanishads-and-ancient-indian-metaphysics.pdf
    • http://www.gorillawalker.com/win32-api-reference-in-visual-c.pdf
    • http://www.gorillawalker.com/dangerous-odds-my-secret-life-inside-an-illegal-billion-dollar.pdf
    • http://www.gorillawalker.com/chicago-luxury-home-condo-the-ultimate-source-for-designing-building.pdf
    • http://www.gorillawalker.com/african-american-folktales-stories-from-the-american-mosaic.pdf
    • http://www.gorillawalker.com/cutaneous-soft-tissue-tumors.pdf
    • http://www.gorillawalker.com/wind-energy-developments-in-the-20th-century.pdf
    • http://www.gorillawalker.com/a-love-worth-giving-living-in-the-overflow-of-god.pdf
    • http://www.gorillawalker.com/ninguem-repara-nas-estrelas-ate-se-apaixonar-ame-em-quanto.pdf
    • http://www.gorillawalker.com/trusts-law-essentials-the-edinburgh-law-essentials-eup.pdf
    • http://www.gorillawalker.com/simple-guide-to-rebreather-diving-includes-both-semi-closed-circuit.pdf
    • http://www.gorillawalker.com/homo-mysticus-three-lectures.pdf
    • http://www.gorillawalker.com/sweden-supertouring-road-atlas-touristische-informationen-ortsregister-mit-postleitzahlen-citypl.pdf
    • http://www.gorillawalker.com/father-bear-s-special-day-maurice-sendak-s-little-bear.pdf
    • http://www.gorillawalker.com/prostitution-in-medieval-society-the-history-of-an-urban-institution.pdf
    • http://www.gorillawalker.com/lift-every-voice
    • 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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