Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5ace4c07623d095…

MALICIOUS

PDF

34.6 KB Created: 2019-09-02 21:48:31 +03:00 Authoring application: Adobe InDesign CS5 (7.0) (via Acrobat Distiller 9.5.3 (Macintosh))
MD5: c98d72e0502ba629decb54e3a2e56645 SHA-1: e918304889ce7df197580e3e3cc3f5212409a5bb SHA-256: c5ace4c07623d095dc22ffeb7790a29769879cd17e170f03898472ca2109173d
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 gorillawalker.com. This technique is often used for SEO poisoning or to distribute malicious content indirectly. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8018

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-jade-chaplet-in-twenty-four-beads-a-collection-of.pdf
    • http://www.gorillawalker.com/navesink-twin-lights-the-first-u-s-lighthouse-to-use.pdf
    • http://www.gorillawalker.com/goblin-nation-the-stonetellers-volume-three.pdf
    • http://www.gorillawalker.com/basic-clinical-neuroscience.pdf
    • http://www.gorillawalker.com/inorganic-reactions-and-methods-the-formation-of-bonds-to-c.pdf
    • http://www.gorillawalker.com/cultivating-an-ecological-conscience-essays-from-a-farmer-philosopher.pdf
    • http://www.gorillawalker.com/advances-in-nephrology-and-dialysis-contributions-to-nephrology.pdf
    • http://www.gorillawalker.com/the-little-blue-reasoning-book-50-powerful-principles-for-clear.pdf
    • http://www.gorillawalker.com/materials-for-subsurface-land-drainage-systems-fao-irrigation-and-drainage.pdf
    • http://www.gorillawalker.com/weapons-in-space-a-legal-narrative-the-dilemma-of-international.pdf
    • http://www.gorillawalker.com/angels-town-chero-ways-gang-life-and-the-rhetorics-of.pdf
    • http://www.gorillawalker.com/visual-artist-s-business-and-legal-guide.pdf
    • http://www.gorillawalker.com/pali-literature-and-language.pdf
    • http://www.gorillawalker.com/the-alps-or-sketches-of-life-and-nature-in-the.pdf
    • http://www.gorillawalker.com/martin-buber-s-ontology-an-analysis-of-i-and-thou.pdf
    • http://www.gorillawalker.com/historia-de-la-comida-spanish-edition.pdf
    • http://www.gorillawalker.com/joy-to-the-world-glory-to-god-for-handbells-3.pdf
    • http://www.gorillawalker.com/when-you-re-expecting-twins-triplets-or-quads-3rd-edition.pdf
    • http://www.gorillawalker.com/the-baptism-of-jesus-my-first-bible-stories.pdf
    • http://www.gorillawalker.com/theme-pockets-august.pdf
    • http://www.gorillawalker.com/hungry-independents-book-2-volume-2.pdf
    • http://www.gorillawalker.com/diffusions-in-solids-past-present-and-future.pdf
    • http://www.gorillawalker.com/the-reality-of-time-and-the-existence-of-god-the.pdf
    • http://www.gorillawalker.com/chameleons-world-of-reptiles.pdf
    • http://www.gorillawalker.com/impact-activated-solidification-of-cornstarch-and-water-suspensions-springer-theses.pdf
    • http://www.gorillawalker.com/ponce-estrellita-my-little-star-violin-piano-published-by-carl.pdf
    • http://www.gorillawalker.com/shaped-by-the-cross-meditations-on-the-sufferings-of-jesus.pdf
    • http://www.gorillawalker.com/integration-of-process-design-and-control.pdf
    • http://www.gorillawalker.com/ccna-data-center-dcicn-640-911-official-cert-guide.pdf
    • http://www.gorillawalker.com/on-hegel-s-philosophy-of-right-the-1934-35-seminar.pdf
    • http://www.gorillawalker.com/how-to-maintain-effective-cash-management.pdf
    • http://www.gorillawalker.com/badminton-for-all-paperback-common.pdf
    • http://www.gorillawalker.com/home-farming-revolution-for-drylands-black-and-white.pdf
    • http://www.gorillawalker.com/dodsworth-in-rome-a-dodsworth-book.pdf
    • http://www.gorillawalker.com/innovating-in-a-global-crisis.pdf
    • http://www.gorillawalker.com/l-ancien-et-le-nouveau-la-production-du-savoir-dans.pdf
    • http://www.gorillawalker.com/cengage-learning-hosted-webtutor-tm-advantage-printed-access-card-for.pdf
    • http://www.gorillawalker.com/deadman-wonderland-vol-6.pdf
    • http://www.gorillawalker.com/admiralty-list-of-radio-signals-pilot-services-vessel-traffic-port.pdf
    • http://www.gorillawalker.com/essentials-of-college-algebra-with-modeling-and-visualization-books-a.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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