Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfc939cf2da31653…

MALICIOUS

PDF

45.1 KB Created: 2018-12-15 08:52:32 +03:00 Authoring application: pdftk 1.44 - www.pdftk.com (via itext-paulo-155 (itextpdf.sf.net-lowagie.com))
MD5: ac48abc33f08d9beabe9187519e68ac3 SHA-1: df3e3fdc7781ea82eba1a9a7f45de06775b5f95c SHA-256: dfc939cf2da3165351219f344af909d3466aee8acb1c3904310b1ee7c539409b
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a link farm with 32 external links, all pointing to PDFs hosted on www.gorillawalker.com. This technique is often used to manipulate search engine rankings or to distribute malicious content. The ML classifier also flagged this PDF as malicious with a high probability.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8634

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-new-argonauts-regional-advantage-in-a-global-economy.pdf
    • http://www.gorillawalker.com/myths-of-the-near-future.pdf
    • http://www.gorillawalker.com/anna-s-prayer.pdf
    • http://www.gorillawalker.com/polities-and-power-an-economic-and-political-history-of-the.pdf
    • http://www.gorillawalker.com/case-closed-vol-28.pdf
    • http://www.gorillawalker.com/crossing-the-water-eighteen-months-on-an-island-working-with.pdf
    • http://www.gorillawalker.com/graphis-new-media-1-a-compilation-of-new-media-design.pdf
    • http://www.gorillawalker.com/books-bicycles-and-banana-trucks-adventures-in-eritrea-with-vso.pdf
    • http://www.gorillawalker.com/get-hooked-again-simple-steps-to-crochet-more-cool-stuff.pdf
    • http://www.gorillawalker.com/inverse-problems-for-partial-differential-equations-applied-mathematical-sciences.pdf
    • http://www.gorillawalker.com/foundations-of-crystallography-with-computer-applications.pdf
    • http://www.gorillawalker.com/issues-in-race-and-ethnicity-selections-from-the-cq-researcher.pdf
    • http://www.gorillawalker.com/ride-a-continental-crossing-in-search-of-trout-clear-water.pdf
    • http://www.gorillawalker.com/the-physical-aspect-of-time-kindle-edition.pdf
    • http://www.gorillawalker.com/arduino-the-ultimate-guide-to-arduino-for-beginners-including-arduino.pdf
    • http://www.gorillawalker.com/complete-casting-handbook-metal-casting-processes-techniques-and-design.pdf
    • http://www.gorillawalker.com/god-in-search-of-man-a-philosophy-of-judaism-kindle.pdf
    • http://www.gorillawalker.com/7-string-chord-and-staff-a-student-manuscript-notebook-from.pdf
    • http://www.gorillawalker.com/globalization-and-indigenous-peoples-in-asia-changing-the-local-global.pdf
    • http://www.gorillawalker.com/my-road-beyond-the-codependent-divorce.pdf
    • http://www.gorillawalker.com/assessing-and-improving-prediction-and-classification.pdf
    • http://www.gorillawalker.com/painted-ponies-1989-calendar-painted-ponies.pdf
    • http://www.gorillawalker.com/cello-prep-test-abrsm-exam-pieces.pdf
    • http://www.gorillawalker.com/naples-and-southern-italy.pdf
    • http://www.gorillawalker.com/the-delicious-way-homemade-sushi-kindle-edition.pdf
    • http://www.gorillawalker.com/wrong-adult-taboo-erotica-sex-stories.pdf
    • http://www.gorillawalker.com/kindertotenlieder-full-score-a2886.pdf
    • http://www.gorillawalker.com/saddam-hussain-and-iraq-troubled-world.pdf
    • http://www.gorillawalker.com/new-orleans-on-parade-tourism-and-the-transformation-of-the.pdf
    • http://www.gorillawalker.com/one-dimensional-non-equilibrium-compressible-two-phase-gas-liquid-flow.pdf
    • http://www.gorillawalker.com/holiday-secrets-be-healthy-and-creative-from-halloween-through-new.pdf
    • http://www.gorillawalker.com/financial-market-regulation-and-reforms-in-emerging-markets.pdf
    • http://www.gorillawalker.com/the-billionaire-who-vol-1-3-bdsm-sex-slave-erotica.pdf
    • http://www.gorillawalker.com/tormenta-de-espadas-spanish-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/applying-performance-live-art-socially-engaged-theatre-and-affective-practice.pdf
    • http://www.gorillawalker.com/cengage-learning-ebook-1-year-printed-access-card-for-roth.pdf
    • http://www.gorillawalker.com/complete-guide-to-sport-education.pdf
    • http://www.gorillawalker.com/the-wooden-horse-military-classics.pdf
    • http://www.gorillawalker.com/math-tutor-multiplication-and-division-grades-4-8-easy-review.pdf
    • http://www.gorillawalker.com/the-junkyard-bot-robots-rule-book-1.pdf
    • http://www.gorillawalker.com/
    • 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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