Malicious PDF — malware analysis report

Static analysis result for SHA-256 bff03095e08b73e0…

MALICIOUS

PDF

41.4 KB Created: 2018-11-23 21:09:16 +03:00 Authoring application: - (via Acrobat Distiller Daemon 3.0 for Solaris 2.3 and later (SPARC))
MD5: 53e595d04cfe36c8dc9873aa5d580f29 SHA-1: 3fb3a5de4c7a6d480659a24227b521d80e3db6bd SHA-256: bff03095e08b73e04b44517d107e6595caef5838653347a6f89c4356ac3146d3
90 Risk Score

Malware Insights

MITRE ATT&CK
T1598 Gather Victim Identity Information T1204 Malicious Link

The PDF contains a large number of embedded links to external PDFs, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged the document as malicious. The primary domain for these links is www.gorillawalker.com. The document body is heavily obfuscated and does not provide clear textual intent, but the link farm suggests a strategy to drive traffic or distribute further content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8872

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/the-great-war-relic-a-poetical-description-of-the-6th.pdf
    • http://www.gorillawalker.com/gestational-diabetes-origins-complications-and-treatment.pdf
    • http://www.gorillawalker.com/olde-cookbook-1883-colorado-cook-book-kindle-edition.pdf
    • http://www.gorillawalker.com/riddles-of-love.pdf
    • http://www.gorillawalker.com/rosario-vampire-season-ii-vol-11.pdf
    • http://www.gorillawalker.com/italian-journey-1786-1788-penguin-classics.pdf
    • http://www.gorillawalker.com/subterranean-peril-action-adventure-short-story.pdf
    • http://www.gorillawalker.com/creating-lampwork-beads-for-jewelry.pdf
    • http://www.gorillawalker.com/504-absolutely-essential-words.pdf
    • http://www.gorillawalker.com/peggy-s-cove-cooking.pdf
    • http://www.gorillawalker.com/ready-willing-and-able-a-developmental-approach-to-college-access.pdf
    • http://www.gorillawalker.com/mark-zuckerberg-the-face-behind-facebook-and-social-networking-titans.pdf
    • http://www.gorillawalker.com/horace-and-morris-but-mostly-dolores.pdf
    • http://www.gorillawalker.com/lyrics-of-sunshine-and-shadow-the-courtship-and-marriage-of.pdf
    • http://www.gorillawalker.com/rhodes-rhodos-1-100-000-holiday-map-rhodes-town-plan.pdf
    • http://www.gorillawalker.com/living-archetypes-the-selected-works-of-anthony-stevens-world-library.pdf
    • http://www.gorillawalker.com/food-an-oxford-anthology.pdf
    • http://www.gorillawalker.com/the-last-witch-incenaga-trilogy-book-1-kindle-edition.pdf
    • http://www.gorillawalker.com/john-eliot-and-the-praying-indians-of-massachusetts-bay-communities.pdf
    • http://www.gorillawalker.com/literature-and-the-writing-process-10th-edition.pdf
    • http://www.gorillawalker.com/chemical-engineering-volume-2-fifth-edition.pdf
    • http://www.gorillawalker.com/kingdom-keepers-vi-dark-passage-the-kingdom-keepers-series.pdf
    • http://www.gorillawalker.com/and-soon-the-song.pdf
    • http://www.gorillawalker.com/frommer-s-cruises-and-ports-of-call-2010-frommer-s.pdf
    • http://www.gorillawalker.com/piano-sonatas-vol-1-kalmus-edition.pdf
    • http://www.gorillawalker.com/iron-sky.pdf
    • http://www.gorillawalker.com/let-s-add-coins-dollars-cents.pdf
    • http://www.gorillawalker.com/how-great-decisions-get-made-10-easy-steps-for-reaching.pdf
    • http://www.gorillawalker.com/voices-of-foreign-brides-the-roots-and-development-of-multiculturalism.pdf
    • http://www.gorillawalker.com/ernest-hemingway-selected-letters-1917-1961-scribner-classics.pdf
    • http://www.gorillawalker.com/interpretation-of-schizophrenia.pdf
    • http://www.gorillawalker.com/plants-people-culture-scientific-american-library-paperback.pdf
    • http://www.gorillawalker.com/mystics-of-the-book-themes-topics-and-topologies.pdf
    • http://www.gorillawalker.com/the-vegan-cookbook-497-recipes.pdf
    • http://www.gorillawalker.com/hedi-slimane-anthology-of-a-decade-france.pdf
    • http://www.gorillawalker.com/unicorns-i-have-known.pdf
    • http://www.gorillawalker.com/against-silence-the-voice-and-vision-of-elie-wiesel-volume.pdf
    • http://www.gorillawalker.com/football-champions-annual-1978.pdf
    • http://www.gorillawalker.com/kids-write-through-it-essays-from-kids-who-ve-triumphed.pdf
    • http://www.gorillawalker.com/french-q-s-learn-to-speak-and-understand-french-with.pdf
    • http://www.gorillawalker.com/riddles-of-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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