Malicious PDF — malware analysis report

Static analysis result for SHA-256 49fc417d0363a7f1…

MALICIOUS

PDF

44.2 KB Created: 2018-12-14 20:40:11 +03:00 Authoring application: Acrobat PDFMaker 5.0 for Word (via Acrobat Distiller 5.0.5 (Windows))
MD5: 87c65e264439489dec3a7b8c37e30cbc SHA-1: 380290f1b638004b82fd40780dd3eab518104eca SHA-256: 49fc417d0363a7f12dc95800e12ef8e1d0d78ef1e02781366944e2cdfbca6df8
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded links to external PDF documents, primarily hosted on 'gorillawalker.com'. This technique is often used for SEO manipulation or to distribute malicious content indirectly. The ML classifier also flagged this PDF as malicious with a high probability. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine the exact payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8683

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/a-history-of-horrors-the-rise-and-fall-of-the.pdf
    • http://www.gorillawalker.com/the-automotive-body-volume-i-components-design-mechanical-engineering-series.pdf
    • http://www.gorillawalker.com/a-color-handbook-of-skin-diseases-of-the-dog-and.pdf
    • http://www.gorillawalker.com/traditional-textiles-of-cambodia-cultural-threads-and-material-heritage.pdf
    • http://www.gorillawalker.com/4-pezzi-sacri-te-deum-no-4-trombone-4-part.pdf
    • http://www.gorillawalker.com/clinical-phonology-assesment-and-treatment-of-articulation-disorders-in-children.pdf
    • http://www.gorillawalker.com/the-new-2015-complete-guide-to-pokemon-black-and-white.pdf
    • http://www.gorillawalker.com/the-fire-on-the-mountain-and-other-stories-from-ethiopia.pdf
    • http://www.gorillawalker.com/between-states.pdf
    • http://www.gorillawalker.com/infection-inferno-book-1.pdf
    • http://www.gorillawalker.com/deadhouse-gates-malazan-book-of-the-fallen-book-2-unabridged.pdf
    • http://www.gorillawalker.com/the-men-behind-monty.pdf
    • http://www.gorillawalker.com/the-theory-of-contract-law-new-essays-cambridge-studies-in.pdf
    • http://www.gorillawalker.com/constructions.pdf
    • http://www.gorillawalker.com/cognitive-task-analysis-expertise-research-and-applications-series.pdf
    • http://www.gorillawalker.com/strategic-risk-taking-a-framework-for-risk-management.pdf
    • http://www.gorillawalker.com/klimt.pdf
    • http://www.gorillawalker.com/schizophrenia-sleep-and-acupuncture.pdf
    • http://www.gorillawalker.com/itchy-brown-girl-seeks-employment.pdf
    • http://www.gorillawalker.com/1001-tv-series.pdf
    • http://www.gorillawalker.com/flash-cards-subtraction.pdf
    • http://www.gorillawalker.com/understanding-dental-caries-basic-and-clinical-aspects-2-volume-set.pdf
    • http://www.gorillawalker.com/the-counter-counterinsurgency-manual-paradigm.pdf
    • http://www.gorillawalker.com/engineering-nature-water-development-and-the-global-spread-of-american.pdf
    • http://www.gorillawalker.com/breaking-silence-coming-out-letters.pdf
    • http://www.gorillawalker.com/happy-birthday-princess-disney-princess-step-into-reading.pdf
    • http://www.gorillawalker.com/hal-leonard-mercyme-welcome-to-the-new-for-piano-vocal.pdf
    • http://www.gorillawalker.com/captain-fact-space-adventure-saving-the-world-one-fact-at.pdf
    • http://www.gorillawalker.com/saving-emily-young-readers.pdf
    • http://www.gorillawalker.com/armenia-travels-studies-volume-one-and-volume-two-2-volume.pdf
    • http://www.gorillawalker.com/political-economy-of-development-in-india-oxford-india-paperbacks.pdf
    • http://www.gorillawalker.com/the-homemade-medicine-book-3rd-edition.pdf
    • http://www.gorillawalker.com/athletics-2004-the-international-track-and-field-annual.pdf
    • http://www.gorillawalker.com/decoded-enhanced-edition.pdf
    • http://www.gorillawalker.com/cooking-for-two-fast-easy-delicious-low-calorie-cooking-for.pdf
    • http://www.gorillawalker.com/a-chiroptactic-s-guide-to-life-recipes-and-remedies-that.pdf
    • http://www.gorillawalker.com/civitas-by-design-building-better-communities-from-the-garden-city.pdf
    • http://www.gorillawalker.com/22-things-a-woman-must-know-if-she-loves-a.pdf
    • http://www.gorillawalker.com/living-with-light-decorating-the-scandinavian-way.pdf
    • http://www.gorillawalker.com/mobility-for-sap.pdf
    • http://www.gorillawalker.com/the-new-201
    • 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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