Malicious PDF — malware analysis report

Static analysis result for SHA-256 091b7a4d6fa5f625…

MALICIOUS

PDF

41.1 KB Created: 2018-11-14 11:22:42 +03:00 Authoring application: ESP Ghostscript 815.02
MD5: e64a1d9fa30ccd8146a589f10fc15f67 SHA-1: ce114484600ee1c76dd76814354c8222a702b2ca SHA-256: 091b7a4d6fa5f625ae1a55e214181acc977b63c783411b82e4a42d7633c68981
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF files on the same domain. While no scripts were extracted, the sheer volume of links suggests an attempt to manipulate search engine rankings or to distribute a large number of potentially malicious documents. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious nature of the file.

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/dk-biography-gandhi.pdf
    • http://www.gorillawalker.com/fundamentals-of-management-self-assmt-pkg.pdf
    • http://www.gorillawalker.com/a-christmas-blizzard.pdf
    • http://www.gorillawalker.com/brides-of-the-kindred-volume-one.pdf
    • http://www.gorillawalker.com/cute-sexy-3-sexy-girls-photo-collection.pdf
    • http://www.gorillawalker.com/a-critic-s-guide-to-word-processing-for-ibm-pc.pdf
    • http://www.gorillawalker.com/a-voluntary-spanking.pdf
    • http://www.gorillawalker.com/the-evil-that-men-do-fbi-profiler-roy-hazelwood-s.pdf
    • http://www.gorillawalker.com/washington-the-united-states.pdf
    • http://www.gorillawalker.com/statistics-for-people-who-think-they-hate-statistics-3rd-edition.pdf
    • http://www.gorillawalker.com/laparoskopische-appendix-hernien-und-kolonchirurgie-state-of-the-art-chirurgische.pdf
    • http://www.gorillawalker.com/indians-on-everest.pdf
    • http://www.gorillawalker.com/dispatches-from-the-war-room-in-the-trenches-with-five.pdf
    • http://www.gorillawalker.com/how-to-draw-trucks-and-tractors-activity-books.pdf
    • http://www.gorillawalker.com/le-conte-s-report-on-east-florida-ftu-monograph-no.pdf
    • http://www.gorillawalker.com/energy-and-empire-the-politics-of-nuclear-and-solar-power.pdf
    • http://www.gorillawalker.com/all-cheeses-great-and-small.pdf
    • http://www.gorillawalker.com/living-reiki-healing-cards-tarcher-inspiration-cards.pdf
    • http://www.gorillawalker.com/i-m-having-his-baby-the-naughty-nanny-shhh-series.pdf
    • http://www.gorillawalker.com/mathematics-of-digital-images-creation-compression-restoration-recognition.pdf
    • http://www.gorillawalker.com/levned-i-iii-volume-3-danish-edition.pdf
    • http://www.gorillawalker.com/deadly-sessions.pdf
    • http://www.gorillawalker.com/sterilization-validation-and-routine-operation-handbook-radiation-sterilization-validation-and.pdf
    • http://www.gorillawalker.com/beyond-the-dark-tower-volume-2.pdf
    • http://www.gorillawalker.com/checklist-of-library-building-design-considerations.pdf
    • http://www.gorillawalker.com/cultureshock-bulgaria-a-survival-guide-to-customs-and-etiquette.pdf
    • http://www.gorillawalker.com/s-s-united-states-fastest-ship-in-the-world.pdf
    • http://www.gorillawalker.com/blessed-be-the-light-of-day.pdf
    • http://www.gorillawalker.com/design-and-maintenance-of-accounting-manuals-a-blueprint-for-running.pdf
    • http://www.gorillawalker.com/the-trick-horse-companion.pdf
    • http://www.gorillawalker.com/textbook-of-diagnostic-ultrasonography-volume-two.pdf
    • http://www.gorillawalker.com/perspectives-on-property-law-perspectives-on-law-series.pdf
    • http://www.gorillawalker.com/band-of-brothers-symphonic-suite-from-pop-symphonic-band.pdf
    • http://www.gorillawalker.com/mi-ultimo-suspiro-my-last-sigh-spanish-edition.pdf
    • http://www.gorillawalker.com/life-wish.pdf
    • http://www.gorillawalker.com/books-for-kids-the-talkative-puppy-bedtime-stories-for-kids.pdf
    • http://www.gorillawalker.com/on-the-art-of-the-cinema.pdf
    • http://www.gorillawalker.com/how-to-understand-and-deal-with-abuse-issues-behavioral-health.pdf
    • http://www.gorillawalker.com/the-gambler-the-rancher-the-willow-creek-series-volume-1.pdf
    • http://www.gorillawalker.com/baby-touch-and-feel-cuddly-animals-baby-touch-feel.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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