Malicious PDF — malware analysis report

Static analysis result for SHA-256 278d5eb8a93f45b7…

MALICIOUS

PDF

40.2 KB Created: 2019-02-12 19:44:19 +03:00 Authoring application: - (via Acrobat Distiller 2.0 for Macintosh)
MD5: a3491cc64c8cc5d3299c1bd42c404f6e SHA-1: cfdaf3e323b355c1cefd75b8498690d119c5965c SHA-256: 278d5eb8a93f45b7ee2939f80f28d57f8359b8f605bfa9cb7ec7ed96a90b03c9
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, primarily hosted on www.gorillawalker.com. This technique is often used to distribute malicious content or to engage in SEO manipulation for malicious purposes. The ML classifier also flagged this PDF as malicious with a high probability.

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/rosas-roses-jardineria-y-plantas-gardening-plants-spanish-edition.pdf
    • http://www.gorillawalker.com/indigenous-peoples-and-local-government-experiences-from-malaysia-and-the.pdf
    • http://www.gorillawalker.com/ap-ab-calculus-exam-test-prep-first-edition.pdf
    • http://www.gorillawalker.com/rigby-on-our-way-to-english-newcomer-books-add-to.pdf
    • http://www.gorillawalker.com/gone-parallel-trilogy-book-1.pdf
    • http://www.gorillawalker.com/notes-on-the-crow-family-of-birds-including-the-raven.pdf
    • http://www.gorillawalker.com/fundemental-principles-of-bacteriology.pdf
    • http://www.gorillawalker.com/web-based-learning-design-implementation-and-evaluation.pdf
    • http://www.gorillawalker.com/the-worst-case-scenario-everest-an-ultimate-adventure-novel-worst.pdf
    • http://www.gorillawalker.com/the-cowboy-inherits-a-bride-cowboys-of-chance-creek.pdf
    • http://www.gorillawalker.com/just-freedom-a-moral-compass-for-a-complex-world-norton.pdf
    • http://www.gorillawalker.com/reforming-european-data-protection-law-law-governance-and-technology-series.pdf
    • http://www.gorillawalker.com/pmp-exam-practice-test-and-study-guide-eighth-edition.pdf
    • http://www.gorillawalker.com/nancy-caroline-s-emergency-care-in-the-streets-orange-book.pdf
    • http://www.gorillawalker.com/the-geometry-of-heisenberg-groups-mathematical-surveys-and-monographs.pdf
    • http://www.gorillawalker.com/receiving-blankets-leisure-arts-2581.pdf
    • http://www.gorillawalker.com/neuropsychology-5e.pdf
    • http://www.gorillawalker.com/the-unexpected-evolution-of-language-discover-the-surprising-etymology-of.pdf
    • http://www.gorillawalker.com/dragon-hunter-volume-18-paperback.pdf
    • http://www.gorillawalker.com/competencia-gramatical-en-uso-a1-english-version-spanish-edition.pdf
    • http://www.gorillawalker.com/mo-better-blues.pdf
    • http://www.gorillawalker.com/highlander-unmasked-a-novel-macleods-of-skye.pdf
    • http://www.gorillawalker.com/machiavelli-a-beginner-s-guide-beginner-s-guides.pdf
    • http://www.gorillawalker.com/etude-op-7-no-4-sheet-kalmus.pdf
    • http://www.gorillawalker.com/barbry-allen-satb-sheet-music.pdf
    • http://www.gorillawalker.com/expert-visual-c-cli-net-for-visual-c-programmers-expert.pdf
    • http://www.gorillawalker.com/world-geography-basic-not-boring-6-8-inventive-exercises-to.pdf
    • http://www.gorillawalker.com/volkswagen-history-to-hobby-all-the-facts-all-the-fun.pdf
    • http://www.gorillawalker.com/american-sign-language-a-look-at-its-history-structure-and.pdf
    • http://www.gorillawalker.com/drawing-nature.pdf
    • http://www.gorillawalker.com/atlas-of-scar-treatment-and-correction.pdf
    • http://www.gorillawalker.com/virtue-of-war-reclaiming-the-classic-christian-traditions-east-and.pdf
    • http://www.gorillawalker.com/amistad-a-long-road-to-freedom-a-thirst-for-freedom.pdf
    • http://www.gorillawalker.com/neuropsychology-of-cancer-and-oncology-contemporary-neuropsychology.pdf
    • http://www.gorillawalker.com/simple-conventions-how-to-play-bridge.pdf
    • http://www.gorillawalker.com/the-ttl-data-book-for-design-engineers-cc-411.pdf
    • http://www.gorillawalker.com/ghost-in-the-shell-stand-alone-complex-3-the-ghost.pdf
    • http://www.gorillawalker.com/music-minus-one-violin-bruch-violin-concerto-in-g-minor.pdf
    • http://www.gorillawalker.com/puss-in-boots-el-gato-con-botas.pdf
    • http://www.gorillawalker.com/surviving-the-storm.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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