Malicious PDF — malware analysis report

Static analysis result for SHA-256 c72294443647c37a…

MALICIOUS

PDF

42.7 KB Created: 2018-12-15 08:52:39 +03:00 Authoring application: - (via PDFlib Personalization Server 5.0.1 (COM/Win32) unlicensed)
MD5: b2943e01a27b4b2c9831a6c078425e2d SHA-1: f6b39985da7ecd1bfe5d7d46f9c8b685d964f051 SHA-256: c72294443647c37a36c87838f09c32fc6c4e680e5e608b07c30a62483b66eedd
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 pointing to external PDF files on the domain 'gorillawalker.com'. This behavior is indicative of a link farm, often used for SEO manipulation or to distribute malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9027

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/workbook-for-egan-s-fundamentals-of-respiratory-care-9e.pdf
    • http://www.gorillawalker.com/d-b-regional-risk-outlook-download-pdf-digital.pdf
    • http://www.gorillawalker.com/medicamentos-esenciales-y-propiedad-intelectual-un-an-lisis-para-pa.pdf
    • http://www.gorillawalker.com/big-rigs.pdf
    • http://www.gorillawalker.com/childhood-under-siege-how-big-business-ruthlessly-targets-children.pdf
    • http://www.gorillawalker.com/chess-endgame-trainer-interactive-lessons-for-the-advanced-player-kindle.pdf
    • http://www.gorillawalker.com/bay-city-death-squad-clandestine-shadow-novels-kindle-edition.pdf
    • http://www.gorillawalker.com/our-bodies-ourselves.pdf
    • http://www.gorillawalker.com/pointe-a-calliere-from-ville-marie-to-montreal.pdf
    • http://www.gorillawalker.com/le-triomphe-de-plutus-comedie-french-edition.pdf
    • http://www.gorillawalker.com/business-planning-closely-held-enterprises-american-casebook-3rd-third-edition.pdf
    • http://www.gorillawalker.com/original-pen-ink-drawing-signed-in-full-by-the-clasically.pdf
    • http://www.gorillawalker.com/mr-handels-water-piece-b-flat-version-trumpet-feature-score.pdf
    • http://www.gorillawalker.com/summer-freeze-curious-fox-you-choose-stories-batman.pdf
    • http://www.gorillawalker.com/pares-scales-flute-or-piccolo.pdf
    • http://www.gorillawalker.com/the-flour-pot-cookie-book-creating-edible-works-of-art.pdf
    • http://www.gorillawalker.com/argentina-south-tierra-del-fuego-travel-map-1-2-2m.pdf
    • http://www.gorillawalker.com/submissive-s-hard-discovery-submission-abroad.pdf
    • http://www.gorillawalker.com/physical-change-aging-a-guide-for-the-helping-professions.pdf
    • http://www.gorillawalker.com/the-90-minute-resume.pdf
    • http://www.gorillawalker.com/elements-of-water-bacteriology-with-special-reference-to-sanitary-water.pdf
    • http://www.gorillawalker.com/acta-regum-et-imperatorum-karolinorum-digesta-et-enarrata-die-urkunden.pdf
    • http://www.gorillawalker.com/i-am-nero-kindle-edition.pdf
    • http://www.gorillawalker.com/bridge-to-the-sun.pdf
    • http://www.gorillawalker.com/construction-methods-and-management-8th-edition.pdf
    • http://www.gorillawalker.com/zen-poetry-the-penguin-book-of.pdf
    • http://www.gorillawalker.com/amy-unbounded-belondweg-blossoming.pdf
    • http://www.gorillawalker.com/holt-mcdougal-avancemos-level-2-dos-spanish-and-english-edition.pdf
    • http://www.gorillawalker.com/school-recorder-books-bk-2.pdf
    • http://www.gorillawalker.com/giving-it-all-away-the-story-of-william-w-cook.pdf
    • http://www.gorillawalker.com/bakery-products-in-europe-download-pdf-digital.pdf
    • http://www.gorillawalker.com/against-a-dark-background.pdf
    • http://www.gorillawalker.com/habsburg-und-die-slavia-mitteleuropa-osteuropa-oldenburger-beitrage-zur-kultur.pdf
    • http://www.gorillawalker.com/arab-science-and-invention-in-the-golden-age.pdf
    • http://www.gorillawalker.com/seven-secrets-to-raising-a-happy-and-healthy-child.pdf
    • http://www.gorillawalker.com/farming-a-reader-s-guide.pdf
    • http://www.gorillawalker.com/conversations-with-bugs-a-journal-with-words-and-drawings.pdf
    • http://www.gorillawalker.com/prep-school-making-primitive-weapons-kindle-edition.pdf
    • http://www.gorillawalker.com/us-a-narrative-history-volume-1-to-1877.pdf
    • http://www.gorillawalker.com/the-body-book-grades-3-6.pdf
    • http://www.gorillawalker.com/our-bodies-ourselves.p
    • 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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