Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bca3a3baea928fd…

MALICIOUS

PDF

43.7 KB Created: 2018-12-15 08:09:45 +03:00 Authoring application: - (via Acrobat Distiller 15.0 (Windows))
MD5: e3452094c38a6825095ee5f99918e689 SHA-1: 0a0d3c261e5a81425e7a1e34133580fa774a6573 SHA-256: 8bca3a3baea928fdf9cd966de1279d56775c24f3fae20143287356dbbaf71fca
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files hosted on 'www.gorillawalker.com'. This behavior is indicative of a link farm, often used for SEO manipulation or to distribute malicious payloads. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, and the document body was heavily obfuscated, preventing a deeper analysis of the immediate user-facing lure.

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/scottish-kings-and-queens-scottie-books.pdf
    • http://www.gorillawalker.com/the-good-book-and-the-big-book-a-a-s.pdf
    • http://www.gorillawalker.com/sharing-hidden-know-how-how-managers-solve-thorny-problems-with.pdf
    • http://www.gorillawalker.com/the-christian-ministry.pdf
    • http://www.gorillawalker.com/anatomy-for-runners-unlocking-your-athletic-potential-for-health-speed.pdf
    • http://www.gorillawalker.com/ville-venete.pdf
    • http://www.gorillawalker.com/common-scents-a-practical-guide-to-aromatherapy.pdf
    • http://www.gorillawalker.com/mapping-the-next-millennium-how-computer-driven-cartography-is-revolutionizing.pdf
    • http://www.gorillawalker.com/barefoot-doctor-s-handbook-for-the-urban-warrior-spiritual-survival.pdf
    • http://www.gorillawalker.com/steve-jobs-92-inspirational-quotes-of-steve-jobs-golden-keys.pdf
    • http://www.gorillawalker.com/as-long-as-it-takes-meeting-the-challenge.pdf
    • http://www.gorillawalker.com/pin-ups-gil-elvgren-2014-taschen-weekly-tear-off-calendars.pdf
    • http://www.gorillawalker.com/imaginations-dare-to-win-the-battle-against-your-mind.pdf
    • http://www.gorillawalker.com/the-redeeming-book-three-age-of-faith-3-kindle-edition.pdf
    • http://www.gorillawalker.com/five-get-into-trouble-galaxy-children-s-large-print.pdf
    • http://www.gorillawalker.com/amazing-animals-cougars.pdf
    • http://www.gorillawalker.com/researcher-and-educator-in-electromagnetics-microwaves-and-optoelectronics-1935-1995.pdf
    • http://www.gorillawalker.com/zack-jackson-the-cytherean-academy-kindle-edition.pdf
    • http://www.gorillawalker.com/blood-group-antigens-antibodies-a-guide-to-clinical-relevance-technical.pdf
    • http://www.gorillawalker.com/far-from-home-the-ffh-collection-folio.pdf
    • http://www.gorillawalker.com/pumps-channels-and-transporters-methods-of-functional-analysis-chemical-analysis.pdf
    • http://www.gorillawalker.com/isotope-geochemistry-a-derivative-of-the-treatise-on-geochemistry.pdf
    • http://www.gorillawalker.com/hambone-folk-art-recipes-paperback-common.pdf
    • http://www.gorillawalker.com/brett-favre.pdf
    • http://www.gorillawalker.com/elmo-loves-you-sesame-street.pdf
    • http://www.gorillawalker.com/psychology-and-work-today.pdf
    • http://www.gorillawalker.com/nursing-assistant-acute-and-long-term-care-workbook.pdf
    • http://www.gorillawalker.com/bpi-building-analyst-essentials.pdf
    • http://www.gorillawalker.com/taken-by-the-clockwork-tentacles-steampunk-tentacle-erotica.pdf
    • http://www.gorillawalker.com/principles-of-research-design-in-the-social-sciences-social-research.pdf
    • http://www.gorillawalker.com/vietnam-for-travellers-by-travellers.pdf
    • http://www.gorillawalker.com/it-s-you-the-poignant-story-of-two-cousins-reunited.pdf
    • http://www.gorillawalker.com/pests-diseases-and-beneficials-friends-and-foes-of-australian-gardens.pdf
    • http://www.gorillawalker.com/people-of-the-lie-the-hope-for-healing-human-evil.pdf
    • http://www.gorillawalker.com/babaji-the-divine-himalayan-yogi.pdf
    • http://www.gorillawalker.com/rake-most-likely-to-thrill-mills-boon-historical-rakes-on.pdf
    • http://www.gorillawalker.com/handbook-of-microbiological-media-fourth-edition.pdf
    • http://www.gorillawalker.com/green-alternatives-and-national-energy-strategy-the-facts-behind-the.pdf
    • http://www.gorillawalker.com/bronzes-sculptors-and-founders-1800-1930-vol-4.pdf
    • http://www.gorillawalker.com/the-power-of-positive-living-course-for-total-health.pdf
    • http://www.gorillawalker.com/anatomy-for-runners-unlocking-your-athletic-potential-for-h
    • 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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