Malicious PDF — malware analysis report

Static analysis result for SHA-256 18ddf60d2d8d7350…

MALICIOUS

PDF

46.1 KB Created: 2018-11-14 08:37:18 +03:00 Authoring application: PScript5.dll Version 5.2 (via GPL Ghostscript 8.15)
MD5: ebd93d984b3756be786c79465e96d707 SHA-1: 19cbba57820fa3b3833ac80e16257c9ff3502a22 SHA-256: 18ddf60d2d8d73505997904c1ab21633799c455d8a60af5959f5d2ba1d86bad5
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files on the domain 'gorillawalker.com'. This behavior is indicative of a link farm or SEO manipulation tactic, which can be used to distribute malicious content or improve search engine rankings for malicious sites. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine a more specific attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8974

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/helping-students-overcome-depression-and-anxiety-second-edition-a-practical.pdf
    • http://www.gorillawalker.com/complete-chester-gould-s-dick-tracy-volume-1.pdf
    • http://www.gorillawalker.com/chibi-vampire-the-novel-vol-6.pdf
    • http://www.gorillawalker.com/vegetable-literacy-cooking-and-gardening-with-twelve-families-from-the.pdf
    • http://www.gorillawalker.com/head-mounted-displays-designing-for-the-user.pdf
    • http://www.gorillawalker.com/singapore-honeymoon-honeymoon-travel-murder-kodansha-novels-1989-isbn-4061814532.pdf
    • http://www.gorillawalker.com/adventure-of-a-lifetime-studying-abroad-in-republic-of-malta.pdf
    • http://www.gorillawalker.com/meine-lady-aus-isan-die-geschichte-einer-mischehe-aus-nordost.pdf
    • http://www.gorillawalker.com/how-to-shape-bake-no-knead-bread-in-dutch-ovens.pdf
    • http://www.gorillawalker.com/they-re-off-horse-racing-at-saratoga.pdf
    • http://www.gorillawalker.com/first-festival-solos-for-clarinet-20-easy-solos-with-piano.pdf
    • http://www.gorillawalker.com/lego-batman-3-beyond-gotham-prima-official-game-guides-paperback.pdf
    • http://www.gorillawalker.com/engineering-play-a-cultural-history-of-children-s-software-the.pdf
    • http://www.gorillawalker.com/folded-map-greater-grand-rapids-rand-mcnally-city-maps.pdf
    • http://www.gorillawalker.com/acoustic-design-architectural-press-library-of-design-and-detailing.pdf
    • http://www.gorillawalker.com/your-favorite-foods-all-sugar-free-part-two-and-sugar.pdf
    • http://www.gorillawalker.com/wittgenstein-understanding-and-meaning-volume-1-of-an-analytical-commentary.pdf
    • http://www.gorillawalker.com/stories-rhymes-for-every-bedtime.pdf
    • http://www.gorillawalker.com/nomads-in-postrevolutionary-iran-the-qashqa-i-in-an-era.pdf
    • http://www.gorillawalker.com/merlin-the-prophet-his-history.pdf
    • http://www.gorillawalker.com/world-regions-in-global-context-peoples-places-and-environments.pdf
    • http://www.gorillawalker.com/dark-disciple-star-wars-unabridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/the-usborne-illustrated-dictionary-of-physics-illustrated-dictionaries.pdf
    • http://www.gorillawalker.com/ann-es-de-p-lerinage-ii-suppl-ment-s-162.pdf
    • http://www.gorillawalker.com/national-geographic-june-1988-vol-173-no-6.pdf
    • http://www.gorillawalker.com/victorian-women-poets-an-annotated-anthology.pdf
    • http://www.gorillawalker.com/dodgen-lecture-2003-life-on-mars-past-present-and-future.pdf
    • http://www.gorillawalker.com/scandinavian-style.pdf
    • http://www.gorillawalker.com/mary-s-lullaby-s-s-a-a-vocal-score.pdf
    • http://www.gorillawalker.com/an-introduction-to-qualitative-research.pdf
    • http://www.gorillawalker.com/varicose-veins-and-telangiectasias-diagnosis-and-treatment.pdf
    • http://www.gorillawalker.com/get-off-the-grass-kickstarting-new-zealand-s-innovation-economy.pdf
    • http://www.gorillawalker.com/stolen-legacy.pdf
    • http://www.gorillawalker.com/vitamins-to-protect-against-and-reverse-aging-dermatology-treatment-news.pdf
    • http://www.gorillawalker.com/the-lexicon-of-labor-more-than-500-key-terms-biographical.pdf
    • http://www.gorillawalker.com/left-of-the-color-line-race-radicalism-and-twentieth-century.pdf
    • http://www.gorillawalker.com/rice-dishes-from-risotto-to-sushi.pdf
    • http://www.gorillawalker.com/models-and-mirrors-towards-an-anthropology-of-public-events.pdf
    • http://www.gorillawalker.com/designs-for-coloring-more-flowers.pdf
    • http://www.gorillawalker.com/persian-architectural-heritage-structure.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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