Malicious PDF — malware analysis report

Static analysis result for SHA-256 25182fb2f3e91e7f…

MALICIOUS

PDF

44.6 KB Created: 2018-11-21 20:53:07 +03:00 Authoring application: - (via pdfTeX-1.0b-pdfcrypt)
MD5: 395e7481dd02386669a25628c4258087 SHA-1: 9928a03ce6f4975949d8035401dd7654c8816d98 SHA-256: 25182fb2f3e91e7fa8f636a003c22ad526594115196e93f39060028c1b06f77f
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links pointing to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, and the document body was heavily obfuscated, limiting further analysis of specific user-facing lures.

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/adios-america.pdf
    • http://www.gorillawalker.com/managing-front-office-operations-with-answer-sheet-ahlei-managing-front.pdf
    • http://www.gorillawalker.com/the-doubtful-trail-a-collection-and-new-translation-of-the.pdf
    • http://www.gorillawalker.com/the-visual-mindscape-of-the-screenplay.pdf
    • http://www.gorillawalker.com/just-one-cookbook-essential-japanese-recipes-kindle-edition.pdf
    • http://www.gorillawalker.com/insurrection-holding-history-acting-edition.pdf
    • http://www.gorillawalker.com/the-fourth-paradigm-data-intensive-scientific-discovery.pdf
    • http://www.gorillawalker.com/gesetz-zur-gleichstellung-behinderter-menschen-behindertengleichstellungsgesetz-bgg-e-book-stand.pdf
    • http://www.gorillawalker.com/frank-sinatra-centennial-songbook-piano-vocal-guitar-artist-songbook.pdf
    • http://www.gorillawalker.com/the-superachievers.pdf
    • http://www.gorillawalker.com/the-intelligent-organization-winning-the-global-competition-with-the-supply.pdf
    • http://www.gorillawalker.com/sticker-dolly-dressing-fashion-designer-spring-collection.pdf
    • http://www.gorillawalker.com/adolescent-portraits-identity-relationships-and-challenges-6th-edition.pdf
    • http://www.gorillawalker.com/breaking-the-male-code-unlocking-the-power-of-friendship.pdf
    • http://www.gorillawalker.com/casenote-legal-briefs-property-keyed-to-dukeminier-krier-alexander-and.pdf
    • http://www.gorillawalker.com/calendar-mysteries-10-october-ogre-a-stepping-stone-book-tm.pdf
    • http://www.gorillawalker.com/john-nelligan-wisconsin-lumberjack-badger-biographies-series.pdf
    • http://www.gorillawalker.com/powerful-environments-for-promoting-deep-conceptual-and-strategic-learning-studia.pdf
    • http://www.gorillawalker.com/history-of-the-office-of-the-secretary-of-defense-vol.pdf
    • http://www.gorillawalker.com/streetwise-portland-map-laminated-city-center-street-map-of-portland.pdf
    • http://www.gorillawalker.com/oh-my-goddess-vol-29.pdf
    • http://www.gorillawalker.com/elizabeth-murray-a-woman-s-pursuit-of-independence-in-eighteenth.pdf
    • http://www.gorillawalker.com/the-wild-ones-a-wild-ones-novel-book-1.pdf
    • http://www.gorillawalker.com/beauty-and-the-beast-human-animal-relations-as-revealed-in.pdf
    • http://www.gorillawalker.com/foreign-relations-of-the-united-states-1958-1960-volume-xi.pdf
    • http://www.gorillawalker.com/winchell-gossip-power-and-the-culture-of-celebrity.pdf
    • http://www.gorillawalker.com/porn-nobody-wants-to-read-a-pansexual-collection-of-unmarketable.pdf
    • http://www.gorillawalker.com/practicing-a-p-workbook-for-human-anatomy-physiology.pdf
    • http://www.gorillawalker.com/i-love-puppies-365-days-2016-calendar.pdf
    • http://www.gorillawalker.com/europe-buddy-book.pdf
    • http://www.gorillawalker.com/using-algebraic-geometry-graduate-texts-in-mathematics.pdf
    • http://www.gorillawalker.com/the-25-days-of-christmas.pdf
    • http://www.gorillawalker.com/fabulous-interiors-of-the-great-ocean-liners-in-historic-photographs.pdf
    • http://www.gorillawalker.com/stone-surround-japanese-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/last-crusade-the-epic-voyages-of-vasco-da-gama.pdf
    • http://www.gorillawalker.com/the-flowering-southwest-wildflowers-cacti-and-succulents-in-arizona-california.pdf
    • http://www.gorillawalker.com/the-hispanic-labyrinth-spain-s-encounter-with-latin-america.pdf
    • http://www.gorillawalker.com/slow-cooker-500-recipes.pdf
    • http://www.gorillawalker.com/the-token-8-kiki-a-billionaire-dark-romantic-suspense-kindle.pdf
    • http://www.gorillawalker.com/teach-yourself-spanish-dictionary-teach-yourself-dictionaries-english-and-spanish.pdf
    • http://www.gorillawalker.com/insurrection-holding-history-act
    • 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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