Malicious PDF — malware analysis report

Static analysis result for SHA-256 f41b26e9242a719e…

MALICIOUS

PDF

39.5 KB Created: 2018-11-14 08:38:47 +03:00 Authoring application: TeX (via pdfTeX-0.14h)
MD5: 62b1d778339996ca45f694a1daaa4c5e SHA-1: 07dcba3166d3ac8427200ea34b9af972d18ecd2f SHA-256: f41b26e9242a719eb279779a1f80c0e0c7129272d627a5f91030edb9c2f1f83a
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 pointing to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine the exact intent beyond the link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9181

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-king-of-the-movies-film-pioneer-siegmund-lubin.pdf
    • http://www.gorillawalker.com/pythagoras-and-the-early-pythagoreans.pdf
    • http://www.gorillawalker.com/running-free-page-turners-3-page-turners-reading-library-level.pdf
    • http://www.gorillawalker.com/using-weighted-alpha-complexes-in-subsurface-modelling-reconstructing-the-shape.pdf
    • http://www.gorillawalker.com/mirror-images-women-surrealism-and-self-representation.pdf
    • http://www.gorillawalker.com/handbook-for-prescribing-medications-during-pregnancy-lippincott-williams-wilkins-handbook.pdf
    • http://www.gorillawalker.com/understanding-organizational-behavior.pdf
    • http://www.gorillawalker.com/merlin-s-legacy-daughter-of-the-mist.pdf
    • http://www.gorillawalker.com/paleo-green-smoothie-recipes-and-raw-paleo-recipes-2-book.pdf
    • http://www.gorillawalker.com/muscle-voyeur.pdf
    • http://www.gorillawalker.com/my-first-knock-knock-joke-book.pdf
    • http://www.gorillawalker.com/sticker-sudoku.pdf
    • http://www.gorillawalker.com/finding-greenwood.pdf
    • http://www.gorillawalker.com/astronomy-with-small-telescopes-up-to-5-inch-125mm-the.pdf
    • http://www.gorillawalker.com/colon-cancer-diseases-and-disorders.pdf
    • http://www.gorillawalker.com/iron-man-volume-5-rings-of-the-mandarin-marvel-now.pdf
    • http://www.gorillawalker.com/the-natural-history-of-big-sur-california-natural-history-guides.pdf
    • http://www.gorillawalker.com/retro-fonts.pdf
    • http://www.gorillawalker.com/the-have-more-plan.pdf
    • http://www.gorillawalker.com/tokyo-calendar-2014mar-japanese-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/matthew-and-the-midnight-turkeys-matthew-s-midnight-adventures.pdf
    • http://www.gorillawalker.com/chevrolet-camaro-1967-81-chilton-total-car-care-series-manuals.pdf
    • http://www.gorillawalker.com/the-houses-of-the-kzinti.pdf
    • http://www.gorillawalker.com/diet-teen-issues-heinemann.pdf
    • http://www.gorillawalker.com/applied-regression-analysis-and-other-multivariable-methods-duxbury-applied.pdf
    • http://www.gorillawalker.com/we-re-painting.pdf
    • http://www.gorillawalker.com/mediterranean-by-cruise-ship-the-complete-guide-to-mediterranean-cruising.pdf
    • http://www.gorillawalker.com/tarnished.pdf
    • http://www.gorillawalker.com/newman-and-life-in-the-spirit-theological-reflections-on-spirituality.pdf
    • http://www.gorillawalker.com/deserted-echo.pdf
    • http://www.gorillawalker.com/how-to-make-meetings-work.pdf
    • http://www.gorillawalker.com/edward-burtynsky-water.pdf
    • http://www.gorillawalker.com/imperial-germany-1867-1918-politics-culture-and-society-in-an.pdf
    • http://www.gorillawalker.com/exploring-mars-cool-science.pdf
    • http://www.gorillawalker.com/cape-coast-fishing-guide-plus-kayak-fishing.pdf
    • http://www.gorillawalker.com/minnie-s-pet-monkey.pdf
    • http://www.gorillawalker.com/future-primitive-revisited.pdf
    • http://www.gorillawalker.com/morphogenesis-and-pathogenicity-in-fungi-topics-in-current-genetics.pdf
    • http://www.gorillawalker.com/act-like-a-success-think-like-a-success-cd-discovering.pdf
    • http://www.gorillawalker.com/como-empezar-un-negocio-la-gu-a-paso-a-paso.pdf
    • http://www.gorillawalker.com/using-weighted-alpha-
    • 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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