Malicious PDF — malware analysis report

Static analysis result for SHA-256 03906ba64a51e5f7…

MALICIOUS

PDF

41.6 KB Created: 2018-11-26 20:06:49 +03:00 Authoring application: - (via Acrobat Web Capture 5.0)
MD5: f697aee923a736ba8766e3732f5b9e9a SHA-1: 2cdae548e1e49a510145074461191fce03d29428 SHA-256: 03906ba64a51e5f7d1d1d55ab9998483eb225210236b123a5f21302ead0aa748
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to other PDF files on the same domain, as indicated by the PDF_SEO_LINK_FARM heuristic. This suggests a tactic to manipulate search engine rankings or to serve as a gateway to a large collection of potentially malicious documents. While no scripts were explicitly extracted, the nature of the embedded URLs and the ML classifier's high confidence score point towards malicious intent.

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/marchesi-vocal-method-vol-1664-op-31-schirmer-s-library.pdf
    • http://www.gorillawalker.com/guide-to-the-coastal-towns-of-new-england.pdf
    • http://www.gorillawalker.com/w-amadeus-mozart-pictogramas-en-la-historia-de-spanish-edition.pdf
    • http://www.gorillawalker.com/the-big-bang-third-edition.pdf
    • http://www.gorillawalker.com/mars-vol-11.pdf
    • http://www.gorillawalker.com/the-golden-bough-cambridge-library-collection-classics-volume-5.pdf
    • http://www.gorillawalker.com/talking-turkeys.pdf
    • http://www.gorillawalker.com/specks.pdf
    • http://www.gorillawalker.com/canadian-television-policy-and-the-board-of-broadcast-governors-1958.pdf
    • http://www.gorillawalker.com/afghanistan-how-the-west-lost-its-way.pdf
    • http://www.gorillawalker.com/to-sleep-perchance-to-die.pdf
    • http://www.gorillawalker.com/usmle-step-2-ck-qbook-usmle-prep.pdf
    • http://www.gorillawalker.com/corporate-finance-and-governance.pdf
    • http://www.gorillawalker.com/corrupting-the-image-angels-aliens-and-the-antichrist-revealed.pdf
    • http://www.gorillawalker.com/homemade-laundry-soap-supplies-easy-diy-household-recipes-for-laundry.pdf
    • http://www.gorillawalker.com/dieta-de-la-super-energia.pdf
    • http://www.gorillawalker.com/your-favorite-foods-paleo-style-part-2-and-paleo-vitamix.pdf
    • http://www.gorillawalker.com/the-waterloo-archive-volume-v.pdf
    • http://www.gorillawalker.com/the-corpse-in-the-cellar-and-further-tales-of-cleveland.pdf
    • http://www.gorillawalker.com/the-self-avoiding-walk-probability-and-its-applications.pdf
    • http://www.gorillawalker.com/east-and-west-of-jordan.pdf
    • http://www.gorillawalker.com/cowboys-wall-calendar.pdf
    • http://www.gorillawalker.com/fairy-tail-41.pdf
    • http://www.gorillawalker.com/the-voyages-of-joshua-slocum-special-anniversary-edition.pdf
    • http://www.gorillawalker.com/public-choice-a-primer-iea-occasional-papers.pdf
    • http://www.gorillawalker.com/medianoche-en-marble-arch-spanish-edition.pdf
    • http://www.gorillawalker.com/new-york-s-50-best-places-to-eat-southern-where.pdf
    • http://www.gorillawalker.com/by-various-2015-antique-maps-wall-calendar-wal-calendar.pdf
    • http://www.gorillawalker.com/a-history-of-west-jordan.pdf
    • http://www.gorillawalker.com/nim-chimpsky-the-chimp-who-would-be-human.pdf
    • http://www.gorillawalker.com/250-classic-rap-quotes-kindle-edition.pdf
    • http://www.gorillawalker.com/test-your-endgame-thinking-everyman-chess.pdf
    • http://www.gorillawalker.com/el-museo-de-la-inocencia-the-museum-of-innocence-spanish.pdf
    • http://www.gorillawalker.com/cal-99-365-days-of-black-history.pdf
    • http://www.gorillawalker.com/agriculture-302-success-secrets-302-most-asked-questions-on-agriculture.pdf
    • http://www.gorillawalker.com/mixed-signal-circuits-devices-circuits-and-systems.pdf
    • http://www.gorillawalker.com/data-structures-outside-in-with-java.pdf
    • http://www.gorillawalker.com/holy-ignorance-when-religion-and-culture-part-ways.pdf
    • http://www.gorillawalker.com/how-to-prepare-a-research-proposal-guidelines-for-funding-and.pdf
    • http://www.gorillawalker.com/empire-furniture-in-italy.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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