Malicious PDF — malware analysis report

Static analysis result for SHA-256 e44d299e2c68460f…

MALICIOUS

PDF

40.5 KB Created: 2019-03-18 02:04:35 +03:00 Authoring application: tFPDF 1.03
MD5: 51819a6c629cc6c9dbaea877fed74be3 SHA-1: 3bbedc9747b6c5a72bc26e2c0dea0090d453490b SHA-256: e44d299e2c68460f6f5d57f22b6abee60f43c4222adf6bf1ad735c70ffda5813
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to host malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, and the document body was heavily obfuscated, making it difficult to determine a more specific attack pattern beyond the link farm.

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/pediatric-neonatal-dosage-handbook-us-standard-edition-pediatric-dosage-handbook.pdf
    • http://www.gorillawalker.com/fashionable-technology.pdf
    • http://www.gorillawalker.com/architecture-of-the-sacred-space-ritual-and-experience-from-classical.pdf
    • http://www.gorillawalker.com/hide-nor-hair-a-jersey-girl-cozy-mystery-book-2.pdf
    • http://www.gorillawalker.com/civil-war-petersburg-confederate-city-in-the-crucible-of-war.pdf
    • http://www.gorillawalker.com/the-hairy-toe-read-and-share-reading-and-math-together.pdf
    • http://www.gorillawalker.com/measuring-success-issues-in-performance-measurement-occasional-paper.pdf
    • http://www.gorillawalker.com/mixed-signals-off-the-grid.pdf
    • http://www.gorillawalker.com/in-the-lands-of-black-lions-and-whi-bears-my.pdf
    • http://www.gorillawalker.com/keystart-first-atlas-copymasters.pdf
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    • http://www.gorillawalker.com/at-home-with-the-queen-life-through-the-keyhole-of.pdf
    • http://www.gorillawalker.com/top-10-tips-for-healthy-kids-nutrition-for-children-kindle.pdf
    • http://www.gorillawalker.com/the-mekong-delta-ecology-economy-and-revolution-1860-1960-wisconsin.pdf
    • http://www.gorillawalker.com/ave-maria-op-12-bassoon-1-and-2-parts-qty.pdf
    • http://www.gorillawalker.com/criminal-evidence-for-police-third-edition.pdf
    • http://www.gorillawalker.com/post-impressions-an-irresponsible-chronicle.pdf
    • http://www.gorillawalker.com/going-out-in-style-the-architecture-of-eternity.pdf
    • http://www.gorillawalker.com/you-and-your-child.pdf
    • http://www.gorillawalker.com/civil-procedure-eighth-edition-aspen-casebook-aspen-casebooks.pdf
    • http://www.gorillawalker.com/typography-14-the-annual-of-the-type-director-s-club.pdf
    • http://www.gorillawalker.com/the-game-ends-at-sundown-kindle-edition.pdf
    • http://www.gorillawalker.com/violin-concerto-no-1-op-26-orchestra-score-parts-clarinet.pdf
    • http://www.gorillawalker.com/england-my-england-and-other-stories.pdf
    • http://www.gorillawalker.com/the-only-ones-deckle-edge-paperback.pdf
    • http://www.gorillawalker.com/visual-maui.pdf
    • http://www.gorillawalker.com/sin-resolver-lugares-misteriosos-unsolved-mysterious-places-sin-resolver-time.pdf
    • http://www.gorillawalker.com/sneakier-uses-for-everyday-things-how-to-turn-a-calculator.pdf
    • http://www.gorillawalker.com/lloyd-llama.pdf
    • http://www.gorillawalker.com/goodbye-allergies-1969-paperback.pdf
    • http://www.gorillawalker.com/sap-simple-finance-an-introduction.pdf
    • http://www.gorillawalker.com/a-brief-history-of-wyandot-county-ohio.pdf
    • http://www.gorillawalker.com/on-guard-for-thee-war-ethnicity-and-the-canadian-state.pdf
    • http://www.gorillawalker.com/handbook-of-mechanical-engineering-calculations-second-edition.pdf
    • http://www.gorillawalker.com/charles-darwin-and-evolution-science-discoveries.pdf
    • http://www.gorillawalker.com/letters-to-a-young-calvinist-an-invitation-to-the-reformed.pdf
    • http://www.gorillawalker.com/radar-systems-performance-modeling-artech-house-radar-library.pdf
    • http://www.gorillawalker.com/trout-lochs-of-scotland.pdf
    • http://www.gorillawalker.com/keystart-first-atlas-copyma
    • 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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