Malicious PDF — malware analysis report

Static analysis result for SHA-256 d08a5b40cde184bd…

MALICIOUS

PDF

33.1 KB Created: 2019-11-23 19:52:05 +03:00 Authoring application: Adobe PageMaker 7.0 (via Acrobat Distiller 5.0.5 for Macintosh)
MD5: ea9a123ed7ea3bb619a03ab02e88ff03 SHA-1: 61a41db1b285e24451a57f58682a2e2dacb0b4f3 SHA-256: d08a5b40cde184bd34ea2c75e622665e95a20d6eaebe1eb6c28f4cee2fb263ed
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded URLs, forming a link farm hosted on www.gorillawalker.com. This heuristic firing suggests the document's primary purpose is to redirect users to a vast collection of other PDFs. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine a more specific attack pattern or payload. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8529

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-kansas-city-medical-index-lancet-volume-8-no-10.pdf
    • http://www.gorillawalker.com/jet-planes-aircraft.pdf
    • http://www.gorillawalker.com/electricidad-b-sica-parte-4-spanish-edition.pdf
    • http://www.gorillawalker.com/adicora-venezuela-the-gringo-s-windsurfing-map-and-guide.pdf
    • http://www.gorillawalker.com/the-cambridge-companion-to-james-joyce-cambridge-companions-to-literature.pdf
    • http://www.gorillawalker.com/how-the-jews-defeated-hitler-exploding-the-myth-of-jewish.pdf
    • http://www.gorillawalker.com/i-ll-be-your-friend-smudge.pdf
    • http://www.gorillawalker.com/a-maze-of-death-s-f-masterworks.pdf
    • http://www.gorillawalker.com/entropic-spacetime-theory-k-e-series-on-knots-and-everything.pdf
    • http://www.gorillawalker.com/democracy-and-the-politics-of-the-extraordinary-max-weber-carl.pdf
    • http://www.gorillawalker.com/imperial-sudan-the-anglo-egyptian-condominium-1934-1956.pdf
    • http://www.gorillawalker.com/acca-p6-irish-tax-paper-p6-revision-kit.pdf
    • http://www.gorillawalker.com/solitaire-battleships-108-challenging-logic-puzzles-paperback.pdf
    • http://www.gorillawalker.com/love-alone-eighteen-elegies-for-rog-kindle-edition.pdf
    • http://www.gorillawalker.com/real-life-marketing-and-promotion-strategies-in-college-libraries-connecting.pdf
    • http://www.gorillawalker.com/the-oxford-history-of-byzantium.pdf
    • http://www.gorillawalker.com/multistate-bar-exam-volume-1-contracts-ucc-criminal-law-and.pdf
    • http://www.gorillawalker.com/straight-and-devious-pathways-from-childhood-to-adulthood.pdf
    • http://www.gorillawalker.com/arena-the-nimbus-chronicles-book-1-unabridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/healthy-cookbooks-healthy-juicing-and-anti-inflammatory-foods-kindle-edition.pdf
    • http://www.gorillawalker.com/ecodesign-implementation-a-systematic-guidance-on-integrating-environmental-considerations-into.pdf
    • http://www.gorillawalker.com/handbook-of-chemical-vapor-deposition-2nd-edition-second-edition-principles.pdf
    • http://www.gorillawalker.com/historical-perspectives-from-a-nation-divided-richmond-to-appomattox.pdf
    • http://www.gorillawalker.com/exhibition-the-plume-book-5-kindle-edition.pdf
    • http://www.gorillawalker.com/introduction-to-hydrology-5th-edition.pdf
    • http://www.gorillawalker.com/brotherhood-and-inheritance-a-canonical-reading-of-the-esau-and.pdf
    • http://www.gorillawalker.com/navigating-a-new-school-middle-school-survival-handbook.pdf
    • http://www.gorillawalker.com/hidden-florida-including-miami-orlando-fort-lauderdale-tampa-bay-the.pdf
    • http://www.gorillawalker.com/uk-radio-the-new-era-special-report.pdf
    • http://www.gorillawalker.com/recepcion-en-hoteleria-administracion-y-op-spanish-edition.pdf
    • http://www.gorillawalker.com/i-led-3-lives-citizen-communist-and-counterspy.pdf
    • http://www.gorillawalker.com/semiotics-and-human-sign-languages-approaches-to-semiotics-as.pdf
    • http://www.gorillawalker.com/prime-time-aerobics-a-modified-aerobic-dance-manual.pdf
    • http://www.gorillawalker.com/basic-pharmacokinetics-and-pharmacodynamics-an-integrated-textbook-and-computer-simulations.pdf
    • http://www.gorillawalker.com/the-king-of-torts-john-grisham.pdf
    • http://www.gorillawalker.com/the-georgia-state-constitution-oxford-commentaries-on-the-state-constitutions.pdf
    • http://www.gorillawalker.com/devon-s-wild-and-wicked-weather.pdf
    • http://www.gorillawalker.com/the-disenchanted.pdf
    • http://www.gorillawalker.com/method-and-results-essays.pdf
    • http://www.gorillawalker.com/the-land-of-nome-a-narrative-sketch-of-the-rush.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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