Malicious PDF — malware analysis report

Static analysis result for SHA-256 b398f88f5923c5ec…

MALICIOUS

PDF

45.5 KB Created: 2018-12-02 20:09:58 +03:00 Authoring application: Acrobat PDFMaker 15 for Word (via Adobe PDF Library 15.0)
MD5: 4d2e3dff556e6f5972f6cf4af22fa1f7 SHA-1: fa4648ecfaa8c778b1edd985dcbb89ebf459358d SHA-256: b398f88f5923c5ecff188c78141d5032178f1f437defc92ee15eb0be0b80f56a
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by a machine learning classifier and a critical heuristic for containing a mass external PDF link farm. The document body contains numerous embedded URLs, all pointing to PDF files on the same domain. This suggests the PDF is designed to lure users into clicking through to a large number of other documents, potentially for SEO manipulation or to host malicious content across many linked files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8600

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/git-along-little-dogies-songs-and-songmakers-of-the-american.pdf
    • http://www.gorillawalker.com/bridgend-maesteg-porthcawl-pencoed-and-pyle-street-atlas-2006.pdf
    • http://www.gorillawalker.com/the-cowboy-s-christmas-family-harlequin-american-romance.pdf
    • http://www.gorillawalker.com/christ-in-christian-tradition-volume-two-part-one-the-development.pdf
    • http://www.gorillawalker.com/the-pilates-dictionary.pdf
    • http://www.gorillawalker.com/walking-israel-a-personal-search-for-the-soul-of-a.pdf
    • http://www.gorillawalker.com/the-fatal-link-the-connection-between-school-shooters-and-the.pdf
    • http://www.gorillawalker.com/a-case-of-federal-propaganda-in-our-public-schools-some.pdf
    • http://www.gorillawalker.com/mr-spock-s-logic-puzzles.pdf
    • http://www.gorillawalker.com/spatial-analysis-in-geomorphology.pdf
    • http://www.gorillawalker.com/treatise-on-invertebrate-paleontology-part-t-echinodermata-2-v-1.pdf
    • http://www.gorillawalker.com/stone-soup-the-first-collection-of-the-syndicated-cartoon.pdf
    • http://www.gorillawalker.com/coaching-kids-teeball-1985-edition.pdf
    • http://www.gorillawalker.com/chilton-s-repair-and-tune-up-guide-blazer-jimmy-1969.pdf
    • http://www.gorillawalker.com/heroes-return.pdf
    • http://www.gorillawalker.com/paradigm-shifts-in-christian-witness-insights-from-anthropology-communication-and.pdf
    • http://www.gorillawalker.com/with-dreams-with-dreams-only-of-you-part-one.pdf
    • http://www.gorillawalker.com/the-commission-on-the-intelligence-capabilities-of-the-united-states.pdf
    • http://www.gorillawalker.com/frans-leren-parallelle-tekst-korte-verhalen-frans-nederlands-dutch-edition.pdf
    • http://www.gorillawalker.com/eight-ballets-and-madrigals-1598.pdf
    • http://www.gorillawalker.com/an-imperialist-love-story-desert-romances-and-the-war-on.pdf
    • http://www.gorillawalker.com/electronic-commerce-2012-managerial-and-social-networks-perspectives-7th-edition.pdf
    • http://www.gorillawalker.com/apples-and-pomegranates-a-family-seder-for-rosh-hashanah-kindle.pdf
    • http://www.gorillawalker.com/a-dictionary-of-art-terms-painting-sculpture-architecture-engraving-and.pdf
    • http://www.gorillawalker.com/fire-safety-of-concrete-structures-background-to-bs-8110-fire.pdf
    • http://www.gorillawalker.com/florida-s-fabulous-canoe-and-kayak-trail-guide-williams-winston.pdf
    • http://www.gorillawalker.com/exploring-sephardic-customs-and-traditions.pdf
    • http://www.gorillawalker.com/sex-between-men-an-intimate-history-of-the-sex-lives.pdf
    • http://www.gorillawalker.com/milked-by-the-viking-a-hucow-fantasy.pdf
    • http://www.gorillawalker.com/basic-guide-to-system-safety.pdf
    • http://www.gorillawalker.com/logic-and-philosophy-a-modern-introduction.pdf
    • http://www.gorillawalker.com/the-cry-for-myth.pdf
    • http://www.gorillawalker.com/happy-s-ever-after-cade-creek-1-siren-everlasting-classic.pdf
    • http://www.gorillawalker.com/why-ben-carson-is-the-new-ronald-reagan-5-reasons.pdf
    • http://www.gorillawalker.com/on-reform.pdf
    • http://www.gorillawalker.com/the-dyonysus-project-groomed-for-servitude-a-journey-to-disgrace.pdf
    • http://www.gorillawalker.com/my-body-science-books.pdf
    • http://www.gorillawalker.com/lange-flash-cards-pharmacology.pdf
    • http://www.gorillawalker.com/exac-u-stats-simplified-baseball-and-softball-scorebook.pdf
    • http://www.gorillawalker.com/conference-on-decision-and-control.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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