Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c1f4ca882f5ee60…

MALICIOUS

PDF

41.8 KB Created: 2019-04-08 18:17:12 +03:00 Authoring application: - (via Acrobat Distiller 5.0 (Windows))
MD5: 31cb08cf5732ead1240ceaf56c8aa595 SHA-1: bfa95d083154169b7014d314427840a86dfd70f9 SHA-256: 8c1f4ca882f5ee60877bcfe0ddef10b60c5fbcbefdead6207d22d9ad0d9d262c
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains a large number of embedded links pointing to external PDF documents, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, and the document body was not readable. The primary attack pattern observed is the extensive link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9181

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/rat-race-blues-the-musical-life-of-gigi-gryce.pdf
    • http://www.gorillawalker.com/at-full-moon-2.pdf
    • http://www.gorillawalker.com/the-travels-of-marco-polo-the-venetian-classic-reprint.pdf
    • http://www.gorillawalker.com/21st-century-complete-guide-to-wildfires-and-natures-superfires-forest.pdf
    • http://www.gorillawalker.com/textbook-of-veterinary-physiology.pdf
    • http://www.gorillawalker.com/dream-babies-child-care-from-locke-to-spock.pdf
    • http://www.gorillawalker.com/behavior-modification-in-a-rehabilitation-facility.pdf
    • http://www.gorillawalker.com/from-slave-to-soldier-based-on-a-true-civil-war.pdf
    • http://www.gorillawalker.com/the-trapper-s-bible-the-most-complete-guide-on-trapping.pdf
    • http://www.gorillawalker.com/fifty-years-of-pakistan-s-economy-traditional-topics-and-new.pdf
    • http://www.gorillawalker.com/inteligencia-interpersonal-people-smart-una-nueva-manera-de-relacionarse-con.pdf
    • http://www.gorillawalker.com/mistress-of-rome-book-three-of-the-emperor-s-obsession.pdf
    • http://www.gorillawalker.com/tanyas-fate-book-one.pdf
    • http://www.gorillawalker.com/fashion-culture-and-identity.pdf
    • http://www.gorillawalker.com/halo-new-blood-unabridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/copyright-interpreting-the-law-for-libraries-archives-and-information-services.pdf
    • http://www.gorillawalker.com/banking-in-asia-the-end-of-entitlement.pdf
    • http://www.gorillawalker.com/100-collection-of-music-clarinet-1998-isbn-4115753102-japanese-import.pdf
    • http://www.gorillawalker.com/figure-skating-and-the-arts-eight-centuries-of-sport-and.pdf
    • http://www.gorillawalker.com/these-high-green-hills-the-mitford-years-book-3-unabridged.pdf
    • http://www.gorillawalker.com/miguel-llobet-collection-isaac-albeniz-cordoba-chanterelle.pdf
    • http://www.gorillawalker.com/gunsmithing-projects.pdf
    • http://www.gorillawalker.com/a-guide-to-federal-agency-adjudication.pdf
    • http://www.gorillawalker.com/controle-las-rabietas-de-su-hijo-temper-your-childs-tantrum.pdf
    • http://www.gorillawalker.com/taxation-in-colonial-america.pdf
    • http://www.gorillawalker.com/handbook-of-social-work-in-child-and-adolescent-sexual-abuse.pdf
    • http://www.gorillawalker.com/ave-maria-sheet-music-for-mixed-voices-satb-choral-mastrwork.pdf
    • http://www.gorillawalker.com/god-tells-the-man-who-cares.pdf
    • http://www.gorillawalker.com/days-of-elijah-sheet-music-satb.pdf
    • http://www.gorillawalker.com/true-colours.pdf
    • http://www.gorillawalker.com/cursed-by-fire-book-one-in-a-paranormal-dark-fantasy.pdf
    • http://www.gorillawalker.com/myhealthprofessionslab-with-pearson-etext-access-card-for-anatomy-physiology-for.pdf
    • http://www.gorillawalker.com/volunteer-work-abroad.pdf
    • http://www.gorillawalker.com/the-pirates-hill-murders-victorian-mansion-book-4-kindle-edition.pdf
    • http://www.gorillawalker.com/john-surtees-world-champion.pdf
    • http://www.gorillawalker.com/7-strategies-of-highly-successful-traders-profiting-from-aphorisms-volume.pdf
    • http://www.gorillawalker.com/iran-government-and-business-contacts-handbook-world-business-investment-and.pdf
    • http://www.gorillawalker.com/le-gentilhomme-de-la-montagne-pi.pdf
    • http://www.gorillawalker.com/tadpole-rex.pdf
    • http://www.gorillawalker.com/diet-for-a-small-planet.pdf
    • http://www.gorillawalker.com/from-slave
    • 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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