Malicious PDF — malware analysis report

Static analysis result for SHA-256 83c7d6ff2f98b20b…

MALICIOUS

PDF

46.3 KB Created: 2018-11-23 08:00:26 +03:00 Authoring application: BookVirtual Digital Works (via BookVirtual Corp. Patents Pending.)
MD5: 11d8f29725bd800f47d55a2988d5610d SHA-1: a086bd0b31730f77b066f510b6f82df10631dc0f SHA-256: 83c7d6ff2f98b20b48191b9f0816a92264e6453f548c65e20468e327fcc9e2b4
90 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF documents on www.gorillawalker.com. This suggests a link farm or content distribution strategy. The ML classifier also flagged the document as malicious. No scripts were extracted from this sample, and the document body was heavily truncated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8709

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/bill-kroen-s-golf-tip-a-day-2016-day-to.pdf
    • http://www.gorillawalker.com/the-victorian-society-book-of-the-victorian-house.pdf
    • http://www.gorillawalker.com/prophecy-study-bible-new-king-james-version-bonded-burgundy.pdf
    • http://www.gorillawalker.com/6-steps-to-increased-fertility-bym-d.pdf
    • http://www.gorillawalker.com/tasting-french-terroir-the-history-of-an-idea-california-studies.pdf
    • http://www.gorillawalker.com/looking-within-how-x-ray-ct-mri-ultrasound-and-other.pdf
    • http://www.gorillawalker.com/music-in-eighteenth-century-britain.pdf
    • http://www.gorillawalker.com/waterfire-saga-book-three-dark-tide-a-deep-blue-novel.pdf
    • http://www.gorillawalker.com/a-christian-passover-seder-kindle-edition.pdf
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    • http://www.gorillawalker.com/american-icarus-the-majestic-rise-and-tragic-fall-of-pan.pdf
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    • http://www.gorillawalker.com/design-like-apple-seven-principles-for-creating-insanely-great-products.pdf
    • http://www.gorillawalker.com/with-my-sister-and-leotard-sometimes-naked-naked-heroine-with.pdf
    • http://www.gorillawalker.com/simple-roulette-strategy-guide-kindle-edition.pdf
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    • http://www.gorillawalker.com/antolog-a-de-la-poes-a-espanola-e-hispanoamericana-spanish.pdf
    • http://www.gorillawalker.com/build-your-own-kitchen-cabinets-popular-woodworking.pdf
    • http://www.gorillawalker.com/everything-you-ever-wanted-to-ask-about-willies-and-other.pdf
    • http://www.gorillawalker.com/sixth-international-conference-on-collective-phenomena-reports-from-the-moscow.pdf
    • http://www.gorillawalker.com/back-to-methuselah.pdf
    • http://www.gorillawalker.com/eat-smart-in-peru-how-to-decipher-the-menu-know.pdf
    • http://www.gorillawalker.com/julius-caesar.pdf
    • http://www.gorillawalker.com/global-hr-competencies-mastering-competitive-value-from-the-outside-in.pdf
    • http://www.gorillawalker.com/motivation-boosters-supercharge-your-brain-chemistry-with-natural-foods-and.pdf
    • http://www.gorillawalker.com/parent-representation-in-policy-development-self-rating-in-intervention-communication.pdf
    • http://www.gorillawalker.com/the-flood-kindle-edition.pdf
    • http://www.gorillawalker.com/charles-dickens-s-great-expectations-a-cultural-life-1860-2012.pdf
    • http://www.gorillawalker.com/microsoft-forefront-threat-management-gateway-tmg-administrator-s-companion-admin.pdf
    • http://www.gorillawalker.com/secondary-hypertension-clinical-presentation-diagnosis-and-treatment-clinical-hypertension-and.pdf
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    • http://www.gorillawalker.com/the-worry-free-life-take-control-of-your-thought-life.pdf
    • http://www.goril
    • 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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