Malicious PDF — malware analysis report

Static analysis result for SHA-256 858e4a85a387e3e5…

MALICIOUS

PDF

42.3 KB Created: 2018-12-03 17:05:41 +03:00 Authoring application: Adobe InDesign CC 2015 (Macintosh) (via Adobe PDF Library 15.0)
MD5: 9ecbadd773016bdac18ab9b3ed7f3284 SHA-1: bccec735ed211cf962788742b7df2ba282ab5ada SHA-256: 858e4a85a387e3e5ab1860b395c390e640c86299ab47a4b55040169394e1aad8
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. While no scripts were extracted, the sheer volume of links suggests a malicious intent, possibly for SEO manipulation or to serve as a distribution point for further malicious content. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8872

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/there-is-a-place-on-earth-a-woman-in-birkenau.pdf
    • http://www.gorillawalker.com/pediatric-neonatal-dosage-handbook-us-standard-edition-pediatric-dosage-handbook.pdf
    • http://www.gorillawalker.com/letters-to-a-young-calvinist-an-invitation-to-the-reformed.pdf
    • http://www.gorillawalker.com/international-law-reports-volume-26.pdf
    • http://www.gorillawalker.com/keystart-first-atlas-copymasters.pdf
    • http://www.gorillawalker.com/civil-war-petersburg-confederate-city-in-the-crucible-of-war.pdf
    • http://www.gorillawalker.com/top-10-tips-for-healthy-kids-nutrition-for-children-kindle.pdf
    • http://www.gorillawalker.com/violin-concerto-no-1-op-26-orchestra-score-parts-clarinet.pdf
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    • http://www.gorillawalker.com/the-only-ones-deckle-edge-paperback.pdf
    • http://www.gorillawalker.com/at-home-with-the-queen-life-through-the-keyhole-of.pdf
    • http://www.gorillawalker.com/international-money-and-finance.pdf
    • http://www.gorillawalker.com/post-impressions-an-irresponsible-chronicle.pdf
    • http://www.gorillawalker.com/the-mekong-delta-ecology-economy-and-revolution-1860-1960-wisconsin.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/pilates-for-beginners-class-1-an-easy-to-follow-pilates.pdf
    • http://www.gorillawalker.com/civil-procedure-eighth-edition-aspen-casebook-aspen-casebooks.pdf
    • http://www.gorillawalker.com/charles-darwin-and-evolution-science-discoveries.pdf
    • http://www.gorillawalker.com/postmodern-american-poetry-a-norton-anthology-by-hoover-paul-08.pdf
    • http://www.gorillawalker.com/measuring-success-issues-in-performance-measurement-occasional-paper.pdf
    • http://www.gorillawalker.com/lloyd-llama.pdf
    • http://www.gorillawalker.com/mixed-signals-off-the-grid.pdf
    • http://www.gorillawalker.com/hide-nor-hair-a-jersey-girl-cozy-mystery-book-2.pdf
    • http://www.gorillawalker.com/sap-simple-finance-an-introduction.pdf
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    • http://www.gorillawalker.com/in-the-lands-of-black-lions-and-whi-bears-my.pdf
    • http://www.gorillawalker.com/going-out-in-style-the-architecture-of-eternity.pdf
    • http://www.gorillawalker.com/the-hairy-toe-read-and-share-reading-and-math-together.pdf
    • http://www.gorillawalker.com/england-my-england-and-other-stories.pdf
    • http://www.gorillawalker.com/sneakier-uses-for-everyday-things-how-to-turn-a-calculator.pdf
    • http://www.gorillawalker.com/you-and-your-child.pdf
    • http://www.gorillawalker.com/the-game-ends-at-sundown-kindle-edition.pdf
    • http://www.gorillawalker.com/on-guard-for-thee-war-ethnicity-and-the-canadian-state.pdf
    • http://www.gorillawalker.com/ave-maria-op-12-bassoon-1-and-2-parts-qty.pdf
    • http://www.gorillawalker.com/history-of-posey-county-indiana-from-the-earliest-times-to.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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