Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8594cb30b1ecda7…

MALICIOUS

PDF

42.0 KB Created: 2018-11-15 18:32:03 +03:00 Authoring application: Acrobat PDFMaker 5.0 for Word (via Acrobat Distiller 5.0.5 (Windows))
MD5: 2255b293d4ca2905c94a30c0273e8ac5 SHA-1: 59dd7bdf1fb46180a2ca60542b8519314f41cb2e SHA-256: e8594cb30b1ecda7d1bd6ec102eb6a44fb74b0d46c3fe3a0bab99b601b5a1b69
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF contains a large number of embedded links to external PDF files, all hosted on the domain www.gorillawalker.com. This behavior is indicative of a link farm, likely used for SEO manipulation or to distribute potentially malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample.

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/the-challenges-of-calculating-the-benefits-of-providing-access-to.pdf
    • http://www.gorillawalker.com/betting-horses-to-win-a-simple-proved-system-of-picking.pdf
    • http://www.gorillawalker.com/mechanics-of-materials-an-introduction-to-engineering-technology.pdf
    • http://www.gorillawalker.com/the-twilight-zone-companion-by-zicree-marc-scott-2nd-second.pdf
    • http://www.gorillawalker.com/oscar-wilde-s-chatterton-literary-history-romanticism-and-the-art.pdf
    • http://www.gorillawalker.com/stepsister-sally.pdf
    • http://www.gorillawalker.com/the-shadow-of-kenyan-democracy-widespread-expectations-of-widespread-corruption.pdf
    • http://www.gorillawalker.com/drawing-for-beginners-guide-learn-how-to-draw-and-zentangle.pdf
    • http://www.gorillawalker.com/the-handbook-of-sustainable-refurbishment-non-domestic-buildings.pdf
    • http://www.gorillawalker.com/telesthesia-communication-culture-and-class.pdf
    • http://www.gorillawalker.com/noah-tiny-readers.pdf
    • http://www.gorillawalker.com/the-visible-word-experimental-typography-and-modern-art-1909-1923.pdf
    • http://www.gorillawalker.com/the-practice-of-war-production-reproduction-and-communication-of-armed.pdf
    • http://www.gorillawalker.com/draw-wild-animals-draw-books.pdf
    • http://www.gorillawalker.com/bsava-manual-of-canine-and-feline-nephrology-and-urology-bsava.pdf
    • http://www.gorillawalker.com/chemical-reactor-modeling-multiphase-reactive-flows.pdf
    • http://www.gorillawalker.com/the-cloud-forest-a-chronicle-of-the-south-american-wilderness.pdf
    • http://www.gorillawalker.com/the-satanic-witch.pdf
    • http://www.gorillawalker.com/sophocles-ajax.pdf
    • http://www.gorillawalker.com/the-classical-greeks.pdf
    • http://www.gorillawalker.com/poets-mind-between-light-and-dark.pdf
    • http://www.gorillawalker.com/you-can-write-great-lyrics.pdf
    • http://www.gorillawalker.com/fetal-and-neonatal-brain-injury.pdf
    • http://www.gorillawalker.com/rockin-out-with-blues-fiddle.pdf
    • http://www.gorillawalker.com/a-mini-guide-to-the-identification-of-new-zealand-spiders.pdf
    • http://www.gorillawalker.com/how-to-take-your-kids-to-disneyland-even-if-you.pdf
    • http://www.gorillawalker.com/the-century-in-food-america-s-fads-and-favorites.pdf
    • http://www.gorillawalker.com/working-with-clay-an-introduction.pdf
    • http://www.gorillawalker.com/1-000-lowfat-recipes.pdf
    • http://www.gorillawalker.com/marie-claire-hair-makeup.pdf
    • http://www.gorillawalker.com/drawing-a-contemporary-approach.pdf
    • http://www.gorillawalker.com/compensating-the-sales-force-a-practical-guide-to-designing-winning.pdf
    • http://www.gorillawalker.com/street-talk-da-official-guide-to-hip-hop-urban-slanguage.pdf
    • http://www.gorillawalker.com/canadian-coin-digest.pdf
    • http://www.gorillawalker.com/milfs-erotic-graphic-novel-and-picture-book-milf-s-9.pdf
    • http://www.gorillawalker.com/astrology-for-dummies.pdf
    • http://www.gorillawalker.com/growing-up-in-the-great-depression.pdf
    • http://www.gorillawalker.com/precision-bidding-and-precision-play.pdf
    • http://www.gorillawalker.com/acoustic-guitar-songs-for-dummies.pdf
    • http://www.gorillawalker.com/forgotten-memories-mills-boon-love-inspired-suspense-swat-top-cops.pdf
    • http://www.gorillawalker.com/oscar-wilde-s
    • 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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