Malicious PDF — malware analysis report

Static analysis result for SHA-256 57ca4461a730c995…

MALICIOUS

PDF

43.2 KB Created: 2018-11-30 20:23:44 +03:00 Authoring application: - (via Acrobat Distiller 5.0.1 for Macintosh)
MD5: 10a4181353c18a9a21503a8627b7f87f SHA-1: 17693e0f5854fc2da13f2091f7d7fe24c0d9fe3b SHA-256: 57ca4461a730c995f4e851e260d86d75e8dcef4554588f6901d93ae6bf2f8400
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged the document as malicious. The primary attack pattern appears to be SEO manipulation or directing users to potentially malicious content hosted on the linked domains. No scripts were extracted, and the document body was unreadable.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8859

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/essential-earth-geology-portal.pdf
    • http://www.gorillawalker.com/vampire-sunrise-delilah-street-paranormal-investigator.pdf
    • http://www.gorillawalker.com/georges-melies.pdf
    • http://www.gorillawalker.com/castles-and-cathedrals-the-architecture-of-power-1066-1550-cambridge.pdf
    • http://www.gorillawalker.com/all-those-vanished-engines.pdf
    • http://www.gorillawalker.com/saint-petersburg-notebook.pdf
    • http://www.gorillawalker.com/spice-up-your-life-the-flexitarian-way.pdf
    • http://www.gorillawalker.com/new-orleans-sketches.pdf
    • http://www.gorillawalker.com/handbook-of-proteolytic-enzymes-third-edition.pdf
    • http://www.gorillawalker.com/reel-dark.pdf
    • http://www.gorillawalker.com/the-phytopia-cookbook.pdf
    • http://www.gorillawalker.com/manual-of-traumatic-brain-injury-management.pdf
    • http://www.gorillawalker.com/the-eye-of-the-heart-metaphysics-cosmology-spiritual-life-library.pdf
    • http://www.gorillawalker.com/prelude-pour-le-piano-sheet-music.pdf
    • http://www.gorillawalker.com/by-stephen-snyder-hill-soldier-of-change-from-the-closet.pdf
    • http://www.gorillawalker.com/queen-regency-refuge-book-3-kindle-edition.pdf
    • http://www.gorillawalker.com/violin-sonatas-no-40-43-by-wolfgang-amadeus-mozart-for.pdf
    • http://www.gorillawalker.com/success-with-bandsaws-success-with-woodworking.pdf
    • http://www.gorillawalker.com/transactional-analysis-for-depression-a-step-by-step-treatment-manual.pdf
    • http://www.gorillawalker.com/greek-medicine-from-the-heroic-to-the-hellenistic-age-a.pdf
    • http://www.gorillawalker.com/pretexta-letras-mexicanas-spanish-edition.pdf
    • http://www.gorillawalker.com/dioramas-a-visual-history-of-the-philippines.pdf
    • http://www.gorillawalker.com/asset-protection-through-security-awareness.pdf
    • http://www.gorillawalker.com/student-workbook-for-essentials-of-anatomy-and-physiology.pdf
    • http://www.gorillawalker.com/warcraft-mage-world-of-warcraft.pdf
    • http://www.gorillawalker.com/hey-duggee-get-well-soon-norrie.pdf
    • http://www.gorillawalker.com/future-money.pdf
    • http://www.gorillawalker.com/trade-the-markets-with-an-edge-traders-world-online-expo.pdf
    • http://www.gorillawalker.com/nature-s-kindred-spirits-aldo-leopold-joseph-wood-krutch-edward.pdf
    • http://www.gorillawalker.com/travels-constantinople-in-the-years-1827-and-1828-or-journey.pdf
    • http://www.gorillawalker.com/namibia-1-1-200-000-travel-map-waterproof-gps-compatible.pdf
    • http://www.gorillawalker.com/wealth-by-stealth-corporate-crime-corporate-law-and-the-perversion.pdf
    • http://www.gorillawalker.com/email-marketing-how-to-build-a-list-with-facebook-ads.pdf
    • http://www.gorillawalker.com/sanctuary-praise.pdf
    • http://www.gorillawalker.com/everest-base-camp-nepal-adventure-map-numbered-sheet-map-folded.pdf
    • http://www.gorillawalker.com/seymour-the-obsessive-images-of-seymour-chwast.pdf
    • http://www.gorillawalker.com/generic-drug-product-development-bioequivalence-drugs-and-the-pharmaceutical-sciences.pdf
    • http://www.gorillawalker.com/the-children-s-plutarch-tales-of-the-greeks.pdf
    • http://www.gorillawalker.com/bastards-of-the-absolute.pdf
    • http://www.gorillawalker.com/the-chemical-weapons-convention-a-commentary-oxford-commentaries-on-international.pdf
    • http://www.gorillawalker.com/spice-up-your-life-
    • 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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