Malicious PDF — malware analysis report

Static analysis result for SHA-256 5354bc4d5203e851…

MALICIOUS

PDF

41.8 KB Created: 2018-11-23 08:04:45 +03:00 Authoring application: TeX (via pdfTeX-1.40.9)
MD5: e5bdaea73ad59f1a659dccf185767c6b SHA-1: 2162c05eca4a440ab0cf902cdec11e8cfc1e5408 SHA-256: 5354bc4d5203e85128fa4345dd49c7fe66bf4a7c078125c24a2850d02c9ed301
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, 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 not sufficiently readable to determine a specific lure. The primary IOCs are the numerous URLs pointing to external PDF files.

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/osteopathy-opportunities-for-the-blind-in-training-and-practice-american.pdf
    • http://www.gorillawalker.com/scarlet-woman-arabesque.pdf
    • http://www.gorillawalker.com/a-companion-to-the-philosophy-of-science-blackwell-companions-to.pdf
    • http://www.gorillawalker.com/from-slave-to-statesman-the-legacy-of-joshua-houston-servant.pdf
    • http://www.gorillawalker.com/harcourt-science-lab-manual-student-edition-science-09-grade-6.pdf
    • http://www.gorillawalker.com/on-a-roll-again-how-to-play-craps-and-win.pdf
    • http://www.gorillawalker.com/evidenzbasierung-in-der-suchtpr-vention-m-glichkeiten-und-grenzen-in.pdf
    • http://www.gorillawalker.com/this-is-ballroom-dance-national-press-books-dance-activities-series.pdf
    • http://www.gorillawalker.com/saving-beauty-a-memoir-of-love-desire-and-multiple-sclerosis.pdf
    • http://www.gorillawalker.com/study-skills-for-master-s-level-students-revised-edition-a.pdf
    • http://www.gorillawalker.com/adventures-of-the-northwoods-set-1-first-5-books.pdf
    • http://www.gorillawalker.com/osteoporosis-how-to-treat-osteoporosis-how-to-prevent-osteoporosis-along.pdf
    • http://www.gorillawalker.com/mediaeval-feudalism.pdf
    • http://www.gorillawalker.com/coaching-en-liderazgo-las-disciplinas-habilidades-y-corazon-de-un.pdf
    • http://www.gorillawalker.com/algebraic-curves-over-a-finite-field-princeton-series-in-applied.pdf
    • http://www.gorillawalker.com/refrigeration-for-pleasureboats-installation-maintenance-and-repair.pdf
    • http://www.gorillawalker.com/best-arm-toning-exercises-for-women-lose-arm-fat-and.pdf
    • http://www.gorillawalker.com/loaves-of-fun-a-history-of-bread-with-activities-and.pdf
    • http://www.gorillawalker.com/confirm-your-faith.pdf
    • http://www.gorillawalker.com/kings-of-the-world-starship-dorsano-chronicles-book-1-kindle.pdf
    • http://www.gorillawalker.com/emily-and-her-cavalier.pdf
    • http://www.gorillawalker.com/lola-at-the-library.pdf
    • http://www.gorillawalker.com/four-1-studios.pdf
    • http://www.gorillawalker.com/the-decency-wars-the-campaign-to-cleanse-american-culture.pdf
    • http://www.gorillawalker.com/bridge-lessons-declaring-notrump-contracts.pdf
    • http://www.gorillawalker.com/west-virginia-narrow-gauge-mann-s-creek-railway.pdf
    • http://www.gorillawalker.com/states-of-consciousness.pdf
    • http://www.gorillawalker.com/the-two-hendricks-unraveling-a-mohawk-mystery.pdf
    • http://www.gorillawalker.com/chiquinha-gonzaga-1-classics-of-the-brazilian-choro-choro-music.pdf
    • http://www.gorillawalker.com/a-guide-to-the-ancient-world-a-dictionary-of-classical.pdf
    • http://www.gorillawalker.com/hooker-to-housewife.pdf
    • http://www.gorillawalker.com/der-todesdiskurs-in-wim-wenders-essay-film-nick-s-movie.pdf
    • http://www.gorillawalker.com/the-father-who-had-ten-children-picture-books.pdf
    • http://www.gorillawalker.com/cognitive-load-theory-explorations-in-the-learning-sciences-instructional-systems.pdf
    • http://www.gorillawalker.com/all-in-one-teaching-resources-environmental-science-prentice-hall-science.pdf
    • http://www.gorillawalker.com/store-windows-no-11.pdf
    • http://www.gorillawalker.com/a-way-through-the-wilderness-growing-in-faith-when-life.pdf
    • http://www.gorillawalker.com/enemy-in-the-mirror.pdf
    • http://www.gorillawalker.com/green-consumption-the-global-rise-of-eco-chic.pdf
    • http://www.gorillawalker.com/twice-bitten-and-bewitched-vampires-of-eternity-3-siren-publishing.pdf
    • http://www.gorillawalker.com/evidenzbasierung
    • 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/

Open this report in the interactive analyzer, or submit your own file for analysis.