Malicious PDF — malware analysis report

Static analysis result for SHA-256 111f673e35415ce8…

MALICIOUS

PDF

41.5 KB Created: 2018-12-07 18:28:47 +03:00 Authoring application: dvips(k) 5.95a Copyright 2005 Radical Eye Software (via GPL Ghostscript 8.61)
MD5: 8f4eaed5cc3cba96a5bb813f159a999f SHA-1: 792638cd4887950d48d4d073d09f03ea6a74e724 SHA-256: 111f673e35415ce8f903e40edb761e42ef64d228cd483cbbfe87722af1672134
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to other PDF files on the domain 'gorillawalker.com'. This behavior is indicative of a link farm or SEO manipulation tactic, which can be used to distribute malicious content or improve search engine rankings for malicious sites. The ML classifier also flagged this PDF as malicious.

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/introduction-to-exceptional-children.pdf
    • http://www.gorillawalker.com/fantasy-artist-s-pocket-reference-incredible-characters.pdf
    • http://www.gorillawalker.com/feminist-research-practice-a-primer.pdf
    • http://www.gorillawalker.com/transferencia-de-esp-ritus.pdf
    • http://www.gorillawalker.com/optical-angular-momentum-optics-optoelectronics.pdf
    • http://www.gorillawalker.com/battlezone-official-guide-to-brady-games.pdf
    • http://www.gorillawalker.com/management-of-laparoscopic-complications-laparoscopic-surgical-series.pdf
    • http://www.gorillawalker.com/superlife-the-5-forces-that-will-make-you-healthy-fit.pdf
    • http://www.gorillawalker.com/lonely-planet-central-europe-phrasebook.pdf
    • http://www.gorillawalker.com/innovative-approaches-to-teaching-and-learning-in-physical-education.pdf
    • http://www.gorillawalker.com/forest-entomology.pdf
    • http://www.gorillawalker.com/jefferson-s-western-explorations-discoveries-made-in-exploring-the-missouri.pdf
    • http://www.gorillawalker.com/the-confederate-states-navy-at-mobile-1861-to-august-1864.pdf
    • http://www.gorillawalker.com/the-golden-hustla.pdf
    • http://www.gorillawalker.com/reliability-of-photovoltaic-cells-modules-components-and-systems-11-13.pdf
    • http://www.gorillawalker.com/the-state-of-interdependence-globalization-internet-and-constitutional-governance-information.pdf
    • http://www.gorillawalker.com/seeds-and-seedlings-the-young-scientist-investigates.pdf
    • http://www.gorillawalker.com/healthy-herbs-fact-versus-fiction.pdf
    • http://www.gorillawalker.com/tradition-today-indigenous-art-in-australia.pdf
    • http://www.gorillawalker.com/exploded.pdf
    • http://www.gorillawalker.com/eccentricity-and-sameness-discourses-on-lesbianism-and-desire-between-women.pdf
    • http://www.gorillawalker.com/coronary-flow-reserve-measurement-and-application-focus-on-transthoracic-doppler.pdf
    • http://www.gorillawalker.com/no-somos-irrompibles-we-are-not-unbreakable-spanish-edition.pdf
    • http://www.gorillawalker.com/history-sixty-first-regiment-pennsylvania-volunteers-1861-1865.pdf
    • http://www.gorillawalker.com/the-irresistible-fairy-tale-the-cultural-and-social-history-of.pdf
    • http://www.gorillawalker.com/education-after-dewey.pdf
    • http://www.gorillawalker.com/south-dakota-wild-scenic-2015-square-12x12-multilingual-edition.pdf
    • http://www.gorillawalker.com/my-splendid-concubine.pdf
    • http://www.gorillawalker.com/tour-of-the-vanoise.pdf
    • http://www.gorillawalker.com/the-future-of-secularism-oxford-india-collection.pdf
    • http://www.gorillawalker.com/abstract-computing-machines.pdf
    • http://www.gorillawalker.com/a-new-sunset-solution-symantec-forms-time-line-solutions-corp.pdf
    • http://www.gorillawalker.com/women-androgynes-and-other-mythical-beasts.pdf
    • http://www.gorillawalker.com/australian-slang-a-dictionary-australian-slang-paperback.pdf
    • http://www.gorillawalker.com/right-brained-multiplication-division-a-forget-memorization-book.pdf
    • http://www.gorillawalker.com/dimanche-and-other-stories-vintage-international.pdf
    • http://www.gorillawalker.com/xml-demystified.pdf
    • http://www.gorillawalker.com/rain-forest-card-games-48-cards-four-games-in-one.pdf
    • http://www.gorillawalker.com/echo-the-copycat-goddess-girls-book-19.pdf
    • http://www.gorillawalker.com/genocide-and-retribution-the-holocaust-in-hungarian-ruled-northern-transylvania.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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