Malicious PDF — malware analysis report

Static analysis result for SHA-256 6da3374f1fc1930f…

MALICIOUS

PDF

42.7 KB Created: 2019-01-06 08:13:16 +03:00 Authoring application: Adobe InDesign CS5 (7.0.3) (via Adobe PDF Library 9.9)
MD5: 380e46c1a820884da8681644c7993d1b SHA-1: ec5cd3ac71bd62e64dc3d242d22778f61d6d3c5b SHA-256: 6da3374f1fc1930f1f923d188eeb784dd3dd30e265744c9b0a82c18081f5c38d
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged the document as malicious. While no scripts were extracted, the sheer volume of links suggests an attempt to manipulate search engine results or redirect users to potentially malicious content hosted on the linked domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8872

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/everybody-was-so-young-gerald-and-sara-murphy-a-lost.pdf
    • http://www.gorillawalker.com/skyship-academy-the-pearl-wars-kindle-edition.pdf
    • http://www.gorillawalker.com/rising-sun-the-decline-fall-volume-1.pdf
    • http://www.gorillawalker.com/2011-alvin-the-chipmunks-calendar.pdf
    • http://www.gorillawalker.com/200-healthy-feasts-hamlyn-all-color.pdf
    • http://www.gorillawalker.com/the-only-guide-to-a-winning-investment-strategy-you-ll.pdf
    • http://www.gorillawalker.com/living-off-the-country-how-to-stay-alive-in-the.pdf
    • http://www.gorillawalker.com/the-economics-concept-and-design-of-information-intermediaries-a-theoretic.pdf
    • http://www.gorillawalker.com/ballpark-mysteries-3-the-l-a-dodger-a-stepping-stone.pdf
    • http://www.gorillawalker.com/marketing-to-win-how-small-businesses-can-do-more-with.pdf
    • http://www.gorillawalker.com/the-fearless-heart-the-practice-of-living-with-courage-and.pdf
    • http://www.gorillawalker.com/dream-analysis-1-notes-of-the-seminar-given-in-1928.pdf
    • http://www.gorillawalker.com/a-spriritual-guide-to-heal-your-chronic-pain.pdf
    • http://www.gorillawalker.com/youth-murder-spectacle-the-cultural-politics-of-youth-in-crisis.pdf
    • http://www.gorillawalker.com/liam-clancy-memoirs-of-an-irish-troubadour.pdf
    • http://www.gorillawalker.com/digestive-system-the-amazing-human-body.pdf
    • http://www.gorillawalker.com/piano-sonata-no-6-in-d-major-d-rnitz-k284.pdf
    • http://www.gorillawalker.com/iso-ts-22002-1-2009-prerequisite-programmes-on-food-safety.pdf
    • http://www.gorillawalker.com/grinding-gears-bad-boys-of-racing-book-2-kindle-edition.pdf
    • http://www.gorillawalker.com/the-charged-void-urbanism.pdf
    • http://www.gorillawalker.com/breakthrough-on-the-new-skis-3-ed-say-goodbye-to.pdf
    • http://www.gorillawalker.com/piloting-seamanship-and-small-boat-handling-a-practical-treatise-dealing.pdf
    • http://www.gorillawalker.com/secrets-of-lemon-rediscovered-50-plus-recipes-for-skin-care.pdf
    • http://www.gorillawalker.com/annual-register-of-grant-support-2014-a-directory-of-funding.pdf
    • http://www.gorillawalker.com/un-esp-ritu-invencible-spanish-edition.pdf
    • http://www.gorillawalker.com/skara-the-first-wave-new-life-for-neolithic-orkney-book.pdf
    • http://www.gorillawalker.com/sangre-y-arena-ed11-cd-blood-and-sand-ed11-cd.pdf
    • http://www.gorillawalker.com/jack-churchill-unlimited-boldness.pdf
    • http://www.gorillawalker.com/lake-powell-glen-canyon-national-recreation-area-arizona-highways-special.pdf
    • http://www.gorillawalker.com/the-oxwelder-s-handbook.pdf
    • http://www.gorillawalker.com/aviation-unit-and-intermediate-maintenance-instructions-army-model-uh-1h.pdf
    • http://www.gorillawalker.com/the-dirty-girl-bundle-three-erotic-tales-of-bbw-stranger.pdf
    • http://www.gorillawalker.com/a-gentle-introduction-to-ros.pdf
    • http://www.gorillawalker.com/reflections-on-the-magic-of-writing-kindle-edition.pdf
    • http://www.gorillawalker.com/toxicants-and-drugs-kinetics-and-dynamics.pdf
    • http://www.gorillawalker.com/a-concise-history-of-buddhism.pdf
    • http://www.gorillawalker.com/the-elements-of-moral-science.pdf
    • http://www.gorillawalker.com/vegetarian-burger-cookbook-kindle-edition.pdf
    • http://www.gorillawalker.com/regional-geography-theory-and-practice-univ-lib.pdf
    • http://www.gorillawalker.com/law-the-state-and-the-international-community-2-vols.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/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_000_off00000209.js
54c89098f346693c39ea140038f3e5dbde55a2e6e7d1325db0de66a42133e675		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x209 14041 bytes

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