Malicious PDF — malware analysis report

Static analysis result for SHA-256 76ca2d2976355573…

MALICIOUS

PDF

42.1 KB Created: 2019-04-06 10:13:43 +03:00 Authoring application: Adobe InDesign CS4 (6.0.4) (via Adobe PDF Library 9.0)
MD5: 5bf611b9269439ffedb5e3b43babf46d SHA-1: 61f1716581584bfcb15368783700b8232654db1b SHA-256: 76ca2d29763555732419baccd14e9ad85d6a0b968bfeca0f2367d6044d301fd2
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF was flagged by a critical heuristic for containing a mass external link farm, with 32 links pointing to PDFs on the domain 'gorillawalker.com'. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the document's structure and the sheer volume of outbound links suggest a deceptive intent, likely to drive traffic to potentially malicious or misleading content, masquerading as legitimate documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9181

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/dementia-and-memory.pdf
    • http://www.gorillawalker.com/juicio-de-l-mites-entre-el-per-y-bolivia-prueba.pdf
    • http://www.gorillawalker.com/improving-the-test-process-implementing-improvement-and-change-a-study.pdf
    • http://www.gorillawalker.com/essentials-of-critical-care-nursing-a-holistic-approach.pdf
    • http://www.gorillawalker.com/applied-econometrics-with-stata.pdf
    • http://www.gorillawalker.com/foster-s-even-odder-irish-oddities.pdf
    • http://www.gorillawalker.com/bobo-the-sailor-man.pdf
    • http://www.gorillawalker.com/educational-psychology-student-value-edition-12th-edition.pdf
    • http://www.gorillawalker.com/ancient-lebanon-monuments-past-and-present-monuments-past-present.pdf
    • http://www.gorillawalker.com/the-nystrom-atlas-of-world-history.pdf
    • http://www.gorillawalker.com/demetri-s-woman-kindle-edition.pdf
    • http://www.gorillawalker.com/historic-georgia-families.pdf
    • http://www.gorillawalker.com/daddy-s-scratchy-face-bunny-s-playdate.pdf
    • http://www.gorillawalker.com/your-firm-your-voice-june-2012-bigger-law-firm-magazine.pdf
    • http://www.gorillawalker.com/worth-the-wait-st-james-book-1.pdf
    • http://www.gorillawalker.com/live-beat-2-teacher-s-resources-upbeat.pdf
    • http://www.gorillawalker.com/the-book-of-governors-the-historia-monastica-of-thomas-bishop.pdf
    • http://www.gorillawalker.com/the-timely-rain-travels-in-new-tibet.pdf
    • http://www.gorillawalker.com/the-little-rabbit-who-wanted-red-wings.pdf
    • http://www.gorillawalker.com/exaltation-plugged-and-unplugged-level-2-praise-worship-duets-for.pdf
    • http://www.gorillawalker.com/the-vitality-of-objects-disseminations-psychoanalysis-in-context.pdf
    • http://www.gorillawalker.com/harry-callahan-aperture-masters-of-photography.pdf
    • http://www.gorillawalker.com/the-complete-alice-alice-s-adventures-in-wonderland-and-through.pdf
    • http://www.gorillawalker.com/the-magical-math-book.pdf
    • http://www.gorillawalker.com/magic-lantern-guides-canon-eos-5d-mark-ii.pdf
    • http://www.gorillawalker.com/bundle-salkind-statistics-for-people-who-think-they-hate-statistics.pdf
    • http://www.gorillawalker.com/the-lost-girls-of-rome.pdf
    • http://www.gorillawalker.com/alpha-outlaw-3-shackled-by-the-sheriff-a-gay-wild.pdf
    • http://www.gorillawalker.com/the-race-life-s-greatest-lesson.pdf
    • http://www.gorillawalker.com/the-objective-guide-to-fixed-and-indexed-annuities.pdf
    • http://www.gorillawalker.com/6-lieder-op-56-die-heiligen-drei-k-nige-aus.pdf
    • http://www.gorillawalker.com/the-empowered-communicator-7-keys-to-unlocking-an-audience.pdf
    • http://www.gorillawalker.com/legal-research-analysis-and-writing-print-replica-kindle-edition.pdf
    • http://www.gorillawalker.com/2008-complete-guide-to-veterans-benefits-and-the-va-compensation.pdf
    • http://www.gorillawalker.com/playing-the-game-my-early-years-in-baseball-dover-baseball.pdf
    • http://www.gorillawalker.com/the-challenge-of-scientometrics-the-development-measurement-and-self-organization.pdf
    • http://www.gorillawalker.com/how-doctors-think-kindle-edition.pdf
    • http://www.gorillawalker.com/the-hockey-sweater-and-other-stories.pdf
    • http://www.gorillawalker.com/old-outboard-motor-service-v-2-old-outboard-motor-service.pdf
    • http://www.gorillawalker.com/psychotropic-drug-directory-2000.pdf
    • http://www.gorillawalker.com/the-nystrom-atlas-of-world-histor
    • 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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