Malicious PDF — malware analysis report

Static analysis result for SHA-256 94538d9130210a74…

MALICIOUS

PDF

44.6 KB Created: 2019-02-12 18:31:10 +03:00 Authoring application: CorelDRAW X5 (via Corel PDF Engine Version 15.1.0.588)
MD5: dda2a077375930a3eeace9d827f61558 SHA-1: 6153b0aca5e3ad55dbef5e9d762bb54be905fc77 SHA-256: 94538d9130210a7456234cc4db10c72d53bf02f0ecc257141cbd85ccb9959160
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by a critical heuristic for containing a large number of external links, specifically 32, pointing to PDF files on the domain www.gorillawalker.com. The ML classifier also assigned a high probability of maliciousness. The embedded URLs suggest a link farm strategy, likely to manipulate search engine results or distribute potentially malicious content disguised as legitimate documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9007

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/the-politics-of-organized-crime-and-the-organized-crime-of.pdf
    • http://www.gorillawalker.com/smartsourcing-driving-innovation-and-growth-through-outsourcing.pdf
    • http://www.gorillawalker.com/bhagavad-gita.pdf
    • http://www.gorillawalker.com/madagascar-bradt-travel-guides-kindle-edition.pdf
    • http://www.gorillawalker.com/baptist-hymn-writers-and-their-hymns-primary-source-edition.pdf
    • http://www.gorillawalker.com/the-misunderstood-man.pdf
    • http://www.gorillawalker.com/ebay-business-advanced-all-you-need-to-know-to-be.pdf
    • http://www.gorillawalker.com/morgen-kommt-der-weihnachtsbar-german-edition.pdf
    • http://www.gorillawalker.com/stillmeadow-sampler-paperback.pdf
    • http://www.gorillawalker.com/stop-your-complaining-from-grumbling-to-gratitude.pdf
    • http://www.gorillawalker.com/learn-em-good-writing-workbook-for-kids-improve-your-child.pdf
    • http://www.gorillawalker.com/packard-the-complete-story-hardcover.pdf
    • http://www.gorillawalker.com/james-redesign-faith-that-works-preaching-the-word.pdf
    • http://www.gorillawalker.com/burrs-analysis-control-and-removal-proceedings-of-the-cirp-international.pdf
    • http://www.gorillawalker.com/trigonometry-with-cd-rom-bca-ilrn-tm-tutorial-personal-tutor.pdf
    • http://www.gorillawalker.com/an-american-history-volume-two.pdf
    • http://www.gorillawalker.com/nos-amours-fantaisies-rotiques-et-libertines-french-edition.pdf
    • http://www.gorillawalker.com/supportive-cancer-care-with-chinese-medicine.pdf
    • http://www.gorillawalker.com/third-grade-vocabulary-success-sylvan-workbooks-language-arts-workbooks.pdf
    • http://www.gorillawalker.com/the-mini-rough-guide-to-budapest-1st-edition-rough-guide.pdf
    • http://www.gorillawalker.com/adventure-stories-for-7-year-olds.pdf
    • http://www.gorillawalker.com/jugando-con-prop-sito-b-isbol-la-vida-y-la.pdf
    • http://www.gorillawalker.com/guerrilla-gambling.pdf
    • http://www.gorillawalker.com/cryptography-and-network-security-principles-and-practice-6th-edition.pdf
    • http://www.gorillawalker.com/the-division-of-the-kingdoms-shakespeare-s-two-versions-of.pdf
    • http://www.gorillawalker.com/todd-taylor-s-banjo-christmas.pdf
    • http://www.gorillawalker.com/business-data-networks-and-security-9th-edition.pdf
    • http://www.gorillawalker.com/dispossession-discrimination-against-african-american-farmers-in-the-age-of.pdf
    • http://www.gorillawalker.com/the-christian-husband-god-s-job-description-for-a-man.pdf
    • http://www.gorillawalker.com/how-karma-works-the-twelve-links-of-dependent-arising.pdf
    • http://www.gorillawalker.com/paradoxical-conquering-in-the-apocalypse-of-john.pdf
    • http://www.gorillawalker.com/the-political-economy-of-international-oil-and-the-underdeveloped-countries.pdf
    • http://www.gorillawalker.com/breitbandkabel-und-zugangsnetze-technische-grundlagen-und-standards-german-edition.pdf
    • http://www.gorillawalker.com/historia-de-costa-rica-el-descubrimiento-y-la-conquista-primary.pdf
    • http://www.gorillawalker.com/florida-hello-usa.pdf
    • http://www.gorillawalker.com/loaves-fishes-and-leftovers.pdf
    • http://www.gorillawalker.com/pirates-of-the-caribbean-from-the-magic-kingdom-to-the.pdf
    • http://www.gorillawalker.com/protecting-the-gulf-s-marine-ecosystems-from-pollution.pdf
    • http://www.gorillawalker.com/the-theory-and-practice-of-group-psychotherapy.pdf
    • http://www.gorillawalker.com/western-provence-and-languedoc-roussillon-landscapes-countryside-guides-s.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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