Malicious PDF — malware analysis report

Static analysis result for SHA-256 043156bfc100a990…

MALICIOUS

PDF

47.5 KB Created: 2019-03-17 11:21:47 +03:00 Authoring application: Adobe PageMaker 6.5 (via Acrobat Distiller 5.0 (Windows))
MD5: 26863620f88571fb82b9d96fcd1111e3 SHA-1: a80bd6337bf389256f07023d16910a0071fdb5da SHA-256: 043156bfc100a990c2fe46ad81dbd21431a763107c3057d8c5c37d242fc885df
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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 or SEO manipulation tactic, which can be used to distribute malicious content or improve search engine rankings for malicious sites. While no scripts were explicitly extracted, the PDF structure and the heuristic 'PDF_SEO_LINK_FARM' strongly suggest this malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8262

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/sinful-habits.pdf
    • http://www.gorillawalker.com/romanticism-and-transcendentalism-1800-1860-backgrounds-to-american-literature.pdf
    • http://www.gorillawalker.com/celebrex-cox-2-inhibitors-the-amazing-new-pain-fighters.pdf
    • http://www.gorillawalker.com/gerhard-richter-books-writings-of-the-gerhard-richter-archive-dresden.pdf
    • http://www.gorillawalker.com/schirmer-s-library-masterworks-for-clarinet-and-piano-vol-1747.pdf
    • http://www.gorillawalker.com/7-h-bitos-de-las-familias-altamente-efectivas-spanish-edition.pdf
    • http://www.gorillawalker.com/feudal-and-modern-japan-travel-lovers-library.pdf
    • http://www.gorillawalker.com/gre-computer-science-test-flashcard-study-system-gre-subject-exam.pdf
    • http://www.gorillawalker.com/corridor-of-storms-first-americans-book-ii.pdf
    • http://www.gorillawalker.com/philip-treacy-when-philip-met-isabella.pdf
    • http://www.gorillawalker.com/irish-pub-songs-piano-vocal-guitar-songbook.pdf
    • http://www.gorillawalker.com/antioxidant-polymers-synthesis-properties-and-applications.pdf
    • http://www.gorillawalker.com/inertia-and-gravitation-the-fundamental-nature-and-structure-of-space.pdf
    • http://www.gorillawalker.com/the-secret-confessions-of-lady-h-book-3.pdf
    • http://www.gorillawalker.com/ready-for-revised-rica-a-test-preparation-guide-for-california.pdf
    • http://www.gorillawalker.com/mona-the-vampire-and-the-big-brown-bap-monster-orchard.pdf
    • http://www.gorillawalker.com/drug-addiction-in-australia.pdf
    • http://www.gorillawalker.com/introduction-to-protein-science-architecture-function-and-genomics.pdf
    • http://www.gorillawalker.com/moving-to-new-york.pdf
    • http://www.gorillawalker.com/backyard-homesteading-a-beginner-s-guide-to-providing-organic-nourishment.pdf
    • http://www.gorillawalker.com/great-escapes-mediterranean-revised-edition.pdf
    • http://www.gorillawalker.com/dr-tony-perrone-s-body-fat-breakthru-10-personalized-plans.pdf
    • http://www.gorillawalker.com/evangelicalism-the-stone-campbell-movement.pdf
    • http://www.gorillawalker.com/introduction-to-statistical-investigations-first-edition-workbook.pdf
    • http://www.gorillawalker.com/building-ibt-toefl-skills-beginning-combined-audio-cd-set.pdf
    • http://www.gorillawalker.com/healthy-protein-desserts-quick-and-easy-protein-powder-recipes.pdf
    • http://www.gorillawalker.com/the-ultimate-encyclopedia-of-mythology-a-comprehensive-a-to-z.pdf
    • http://www.gorillawalker.com/nova-scotia-book-of-everything-everything-you-wanted-to-know.pdf
    • http://www.gorillawalker.com/feeding-babies-and-toddlers-the-home-style-way-kindle-edition.pdf
    • http://www.gorillawalker.com/basic-statistical-analysis-8th-edition.pdf
    • http://www.gorillawalker.com/havoc-s-sword-an-alan-lewrie-naval-adventure-alan-lewrie.pdf
    • http://www.gorillawalker.com/chemical-synthesis-studies-in-the-investigation-of-natural-organic-products.pdf
    • http://www.gorillawalker.com/aacn-procedure-manual-for-critical-care-text-and-e-book.pdf
    • http://www.gorillawalker.com/the-brother-gardeners-a-generation-of-gentlemen-naturalists-and-the.pdf
    • http://www.gorillawalker.com/cuentos-clasicos-disney-s-classic-storybook-spanish-language-edition-tesoros.pdf
    • http://www.gorillawalker.com/the-north-west-passage-being-the-record-of-a-voyage.pdf
    • http://www.gorillawalker.com/the-global-prehistory-of-human-migration.pdf
    • http://www.gorillawalker.com/nelson-international-mathematics-2nd-edition-workbook-1b.pdf
    • http://www.gorillawalker.com/jazz-pop-jazz-play-along-volume-102-hal-leonard-jazz.pdf
    • http://www.gorillawalker.com/supreme-court-compendium-4th-ed-supreme-court-compendium-data-decisions.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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