Malicious PDF — malware analysis report

Static analysis result for SHA-256 06e4329544442857…

MALICIOUS

PDF

40.9 KB Created: 2018-11-23 21:00:56 +03:00 Authoring application: - (via iText 2.1.0 (by lowagie.com))
MD5: a757731a262937677705ca42559ad1c6 SHA-1: adcb1e249edc99ca901b9a70c0e76375e2668f6a SHA-256: 06e432954444285743262067689d451f93c2a78a881072f0b41563255d4c59b0
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic firing for a 'PDF_SEO_LINK_FARM', indicating a large number of external links embedded within the document. The ML classifier also flagged the PDF as malicious. The embedded URLs point to various PDF files on the 'gorillawalker.com' domain, suggesting a coordinated effort to manipulate search engine results or distribute content through a link farm. 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-man-movie-encyclopedia-vol-1-kindle-edition.pdf
    • http://www.gorillawalker.com/food-from-your-forest-garden-how-to-harvest-cook-and.pdf
    • http://www.gorillawalker.com/history-of-bacteriology.pdf
    • http://www.gorillawalker.com/yes-lord-hymnal-black.pdf
    • http://www.gorillawalker.com/sounds-of-rebellion-music-in-the-1960s-popular-music-through.pdf
    • http://www.gorillawalker.com/we-moon-2016-calendar-gaia-rhythms-for-women-quantum-leap.pdf
    • http://www.gorillawalker.com/charles-sanders-peirce-enlarged-edition-revised-and-enlarged-edition-a.pdf
    • http://www.gorillawalker.com/keyboard-sounds-and-styles.pdf
    • http://www.gorillawalker.com/der-schatz-von-blackhope-hall-german-edition.pdf
    • http://www.gorillawalker.com/l-evolution-des-sites-mayas-du-sud-de-l-etat.pdf
    • http://www.gorillawalker.com/a-soldier-s-journey.pdf
    • http://www.gorillawalker.com/play-for-java-covers-play-2.pdf
    • http://www.gorillawalker.com/2007-code-of-federal-regulations-title-46-shipping-parts-156.pdf
    • http://www.gorillawalker.com/silver-on-the-road-the-devil-s-west-book-1.pdf
    • http://www.gorillawalker.com/living-in-freedom-the-new-prague.pdf
    • http://www.gorillawalker.com/my-changes-middle-school-survival-series-kindle-edition.pdf
    • http://www.gorillawalker.com/die-alte-donau-menschen-am-wasser-perspektiven-einer-wiener-landschaft.pdf
    • http://www.gorillawalker.com/i-travel-the-world-heritage-united-states-canada-australia-and.pdf
    • http://www.gorillawalker.com/trabalenguas-spanish-edition.pdf
    • http://www.gorillawalker.com/the-maharajah-s-box-an-imperial-story-of-conspiracy-love.pdf
    • http://www.gorillawalker.com/petrological-evolution-of-the-european-lithospheric-mantle-special-publication-337.pdf
    • http://www.gorillawalker.com/transfusion-and-transplantation-science-fundamentals-of-biomedical-science.pdf
    • http://www.gorillawalker.com/facts-essential-knowledge-for-curious-kids.pdf
    • http://www.gorillawalker.com/polymer-photophysics-and-photochemistry.pdf
    • http://www.gorillawalker.com/nri-now-returned-to-india-amol-dixit-series-book-1.pdf
    • http://www.gorillawalker.com/new-illustrated-atlas-of-the-bible.pdf
    • http://www.gorillawalker.com/china-trade.pdf
    • http://www.gorillawalker.com/animals-0-3-years-old-2-children-start-encyclopedia-chinese.pdf
    • http://www.gorillawalker.com/sir-isaac-newton-great-names.pdf
    • http://www.gorillawalker.com/the-film-year-book-1927-the-ninth-annual-edition-of.pdf
    • http://www.gorillawalker.com/from-the-tea-village.pdf
    • http://www.gorillawalker.com/the-secrets-of-vacheron-constantin-250-years-of-history.pdf
    • http://www.gorillawalker.com/the-indivisible-remainder-on-schelling-and-related-matters-radical-thinkers.pdf
    • http://www.gorillawalker.com/the-tops-way-to-weight-loss.pdf
    • http://www.gorillawalker.com/45-professional-soccer-possession-drills-top-training-drills-from-the.pdf
    • http://www.gorillawalker.com/word-life-series-1-2-samuel-korean.pdf
    • http://www.gorillawalker.com/cliffsnotes-act-quick-review.pdf
    • http://www.gorillawalker.com/illegal-immigration-essential-viewpoints.pdf
    • http://www.gorillawalker.com/stella-is-a-star-with-cd.pdf
    • http://www.gorillawalker.com/platform-get-noticed-in-a-noisy-world-kindle-edition.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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