Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc391cde586cebab…

MALICIOUS

PDF

33.5 KB Created: 2019-12-14 05:16:33 +03:00 Authoring application: Adobe InDesign CC 2014 (Windows) (via Adobe PDF Library 11.0)
MD5: cd849f4a4a794cc8d200b353c59a08ce SHA-1: 479d311c6e87ab3d33ab14276e540fe2c45a37c3 SHA-256: fc391cde586cebab7848eeca511987c55b9c8684b0725f30367f29fb10570f1b
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of external links, identified 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 results or redirect users to potentially malicious content hosted on the linked domains. The document body was heavily obfuscated and unreadable.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8313

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/puppies-a-picture-book-of-cute-puppies-for-children-cute.pdf
    • http://www.gorillawalker.com/provence-cote-d-azur-aa-road-map-france.pdf
    • http://www.gorillawalker.com/funny-jokes-for-kids-kids-joke-books-volume-2.pdf
    • http://www.gorillawalker.com/damned-nation-hell-in-america-from-the-revolution-to-reconstruction.pdf
    • http://www.gorillawalker.com/marxism-and-history.pdf
    • http://www.gorillawalker.com/ultimo-pirata-del-caribe-cofresi-edicion-de-coleccion-ilustrada-spanish.pdf
    • http://www.gorillawalker.com/the-rucksack-war-u-s-army-operational-logistics-in-grenada.pdf
    • http://www.gorillawalker.com/gregory-crewdson-dream-of-life.pdf
    • http://www.gorillawalker.com/lee-an-abridgement.pdf
    • http://www.gorillawalker.com/sasha-s-parents-get-a-divorce-the-adventures-of-shelby.pdf
    • http://www.gorillawalker.com/practicing-texas-politics-text-only.pdf
    • http://www.gorillawalker.com/vitamin-b6-therapy-nature-s-versatile-healer.pdf
    • http://www.gorillawalker.com/by-herb-brambley-cotton-s-tale-a-true-iditarod-story.pdf
    • http://www.gorillawalker.com/marketing-the-core-2nd-edition.pdf
    • http://www.gorillawalker.com/the-most-important-thing-you-ll-ever-study-a-survey.pdf
    • http://www.gorillawalker.com/2-po-mes-op-32-allegro-no-2-for-orchestra.pdf
    • http://www.gorillawalker.com/electron-density-and-bonding-in-crystals-principles-theory-and-x.pdf
    • http://www.gorillawalker.com/building-an-igloo.pdf
    • http://www.gorillawalker.com/la-protection-contre-les-risques-financiers-et-la-responsabilit.pdf
    • http://www.gorillawalker.com/saving-emily-based-on-a-true-story.pdf
    • http://www.gorillawalker.com/kurdish-nationalism-and-political-islam-in-turkey-kemalist-identity-in.pdf
    • http://www.gorillawalker.com/dancing-by-mrs-lilly-grove-and-other-writers-with-musical.pdf
    • http://www.gorillawalker.com/principles-of-fermentation-technology-second-edition.pdf
    • http://www.gorillawalker.com/presidential-elections-cornerstones-of-freedom-series.pdf
    • http://www.gorillawalker.com/in-a-world-just-right.pdf
    • http://www.gorillawalker.com/microsoft-sql-server-2012-reporting-services-4-e.pdf
    • http://www.gorillawalker.com/willowdale-yesterday-s-farms-today-s-legacy.pdf
    • http://www.gorillawalker.com/vegetation-of-the-soviet-polar-deserts-studies-in-polar-research.pdf
    • http://www.gorillawalker.com/norwegian-proverbs.pdf
    • http://www.gorillawalker.com/the-coin-collector-s-survival-manual-6th-edition.pdf
    • http://www.gorillawalker.com/madiba.pdf
    • http://www.gorillawalker.com/intrighi-e-gelosia-passion-il-velo-di-holmes-italian-edition.pdf
    • http://www.gorillawalker.com/finding-infinity-infinity-series-volume-3.pdf
    • http://www.gorillawalker.com/the-aerodynamics-of-powered-flight.pdf
    • http://www.gorillawalker.com/a-tiny-itsy-bitsy-gift-of-life-an-egg-donor.pdf
    • http://www.gorillawalker.com/environmentally-responsible-design-green-and-sustainable-design-for-interior-designers.pdf
    • http://www.gorillawalker.com/digital-integrated-circuits.pdf
    • http://www.gorillawalker.com/on-flexibility-recovery-from-technological-and-doctrinal-surprise-on-the.pdf
    • http://www.gorillawalker.com/les-totems-d-andre-breton-surrealisme-et-primitivisme-litteraire-collection.pdf
    • http://www.gorillawalker.com/sing-your-own-song-a-guide-for-single-moms.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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