Malicious PDF — malware analysis report

Static analysis result for SHA-256 88d8f187502ddc3c…

MALICIOUS

PDF

41.8 KB Created: 2018-12-02 10:57:16 +03:00 Authoring application: PDF CoDe 2015.5473 (c) 2002-2015 European Commission
MD5: 971275dc7aa8b9d9606d3dad2028be45 SHA-1: 0ba9acd142321369b1bf2b6a3f02dff65d2892f6 SHA-256: 88d8f187502ddc3cf9398840b489deaba21136eb2a77dd1a0398b5116c66733e
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, and the document body was unreadable, limiting further analysis of the specific lure.

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/jack-prelutsky-s-sweet-and-silly-muppet-poems-disney-s.pdf
    • http://www.gorillawalker.com/the-pulmonary-endothelium-function-in-health-and-disease.pdf
    • http://www.gorillawalker.com/study-guide-for-essentials-of-pediatric-nursing.pdf
    • http://www.gorillawalker.com/a-story-about-a-real-man-library-of-selected-soviet.pdf
    • http://www.gorillawalker.com/what-s-a-daddy-for.pdf
    • http://www.gorillawalker.com/from-my-window-to-yours-unlock-the-windows-to-effective.pdf
    • http://www.gorillawalker.com/bricolaje-para-dummies-spanish-edition.pdf
    • http://www.gorillawalker.com/21-hungarian-dances-orchestra-woo-1-no-9-trombone-3.pdf
    • http://www.gorillawalker.com/studyguide-for-mathematics-by-lial-margaret-l.pdf
    • http://www.gorillawalker.com/how-to-be-a-compleat-clown.pdf
    • http://www.gorillawalker.com/a-trip-into-space-an-adventure-to-the-international-space.pdf
    • http://www.gorillawalker.com/sunbathing-in-the-rain-a-cheerful-book-on-depression.pdf
    • http://www.gorillawalker.com/the-complete-handbook-of-plumbing-paperback.pdf
    • http://www.gorillawalker.com/when-floods-flow-eye-on-the-sky.pdf
    • http://www.gorillawalker.com/mosby-s-pdq-for-respiratory-care-2e.pdf
    • http://www.gorillawalker.com/sex-life-how-our-sexual-encounters-and-experiences-define-who.pdf
    • http://www.gorillawalker.com/secrets-of-the-garden-food-chains-and-the-food-web.pdf
    • http://www.gorillawalker.com/national-geographic-traveler-taiwan-von-macdonald-phil-2013-broschiert.pdf
    • http://www.gorillawalker.com/the-constitution-and-criminal-procedure-first-principles.pdf
    • http://www.gorillawalker.com/allez-viens-french-level-2-grammar-and-vocabulary-workbook.pdf
    • http://www.gorillawalker.com/the-acting-bug.pdf
    • http://www.gorillawalker.com/missing-link-the-image-of-man-in-contemporary-photography.pdf
    • http://www.gorillawalker.com/race-track-attack-guide-buttonwillow-raceway-cw-13-kindle-edition.pdf
    • http://www.gorillawalker.com/international-fun-and-team-athletics-for-the-primary-age-group.pdf
    • http://www.gorillawalker.com/foucault-and-his-interlocutors.pdf
    • http://www.gorillawalker.com/maryland-real-estate-practice-law.pdf
    • http://www.gorillawalker.com/therapeutic-drug-monitoring-data-a-concise-guide-3rd-edition.pdf
    • http://www.gorillawalker.com/children-s-first-encyclopaedia-of-knowledge-bk-2.pdf
    • http://www.gorillawalker.com/working-with-emotional-intelligence-abridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/a-cup-of-coffee-origins.pdf
    • http://www.gorillawalker.com/por-favor-sea-feliz-en-pareja-superaci-n-personal-spanish.pdf
    • http://www.gorillawalker.com/the-german-sniper-badge-1944-1945.pdf
    • http://www.gorillawalker.com/clear-light-of-bliss-tantric-meditation-manual.pdf
    • http://www.gorillawalker.com/to-reach-the-clouds-my-high-wire-walk-between-the.pdf
    • http://www.gorillawalker.com/pcr-3-pcr-in-situ-hybridization-a-practical-approach-the.pdf
    • http://www.gorillawalker.com/1-corinthians-baker-exegetical-commentary-on-the-new-testament.pdf
    • http://www.gorillawalker.com/learn-to-type-fast.pdf
    • http://www.gorillawalker.com/the-implied-reader-in-isaiah-6-12-biblical-interpretation-series.pdf
    • http://www.gorillawalker.com/slaves-of-the-demon-master.pdf
    • http://www.gorillawalker.com/construction-profit-management-the-secrets-of-successful-contracting.pdf
    • http://www.gorillawalker.com/21-hungari
    • 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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