Malicious PDF — malware analysis report

Static analysis result for SHA-256 41b64e314e5e5650…

MALICIOUS

PDF

42.6 KB Created: 2018-12-07 18:27:16 +03:00 Authoring application: Adobe InDesign CS4 (6.0) (via Adobe PDF Library 9.0)
MD5: 854792b27ec732bed065cd19f06131c7 SHA-1: 36f70a25f0439c54a5b45c2e516bcd57d33028d8 SHA-256: 41b64e314e5e56503634654a73baa26b18086e0d7345a090c2ddb913e5f22a14
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF contains a large number of embedded links to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML_NYX_PDF_MALICIOUS classifier also flagged the document with high confidence. The embedded URLs are likely used to manipulate search engine rankings or to distribute additional malicious content, although no specific payload was identified in this sample. The document body was heavily obfuscated and unreadable.

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/polycentricity-and-local-public-economies-readings-from-the-workshop-in.pdf
    • http://www.gorillawalker.com/lil-y-minino-juegan-al-escondite-palabras-menudas-series.pdf
    • http://www.gorillawalker.com/before-the-shutter-planning-your-next-travel-photography-adventure.pdf
    • http://www.gorillawalker.com/green-lantern-green-arrow-collection-volume-2.pdf
    • http://www.gorillawalker.com/china-tattoo.pdf
    • http://www.gorillawalker.com/dix-huit-etudes-pour-hautbois-ou-saxophone.pdf
    • http://www.gorillawalker.com/the-ballad-of-sara-doom-myths-messages-markers-from-the.pdf
    • http://www.gorillawalker.com/workbook-calculus-matrices-and-vector-geometry-workbook-for-grade-12.pdf
    • http://www.gorillawalker.com/back-to-school-sight-words-6-95-noun-flashcards-for.pdf
    • http://www.gorillawalker.com/wilmington.pdf
    • http://www.gorillawalker.com/fundamentals-with-elements-of-algebra.pdf
    • http://www.gorillawalker.com/grand-canyon-this-beautiful-world-v-23.pdf
    • http://www.gorillawalker.com/methods-of-achieving-improved-seismic-performance-of-communications-systems-american.pdf
    • http://www.gorillawalker.com/scorpion-venoms-toxinology.pdf
    • http://www.gorillawalker.com/non-verbal-reasoning-age-10-11-assessment-papers-letts-11.pdf
    • http://www.gorillawalker.com/danish-population-history-1600-1939.pdf
    • http://www.gorillawalker.com/tales-of-enchantment-2nd-edition-advanced-dungeons-dragons-ga3-adventure.pdf
    • http://www.gorillawalker.com/orbifolds-and-stringy-topology-cambridge-tracts-in-mathematics.pdf
    • http://www.gorillawalker.com/360-sound-the-columbia-records-story.pdf
    • http://www.gorillawalker.com/lockdown.pdf
    • http://www.gorillawalker.com/1000-basic-phrases-japanese-yoruba-chitchat-worldwide-japanese-edition-kindle.pdf
    • http://www.gorillawalker.com/zane-grey-his-life-his-adventures-his-women.pdf
    • http://www.gorillawalker.com/barriers-and-challenges-in-computational-fluid-dynamics-icase-larc-interdisciplinary.pdf
    • http://www.gorillawalker.com/diary-of-two-mad-black-mormons-finding-the-lord-s.pdf
    • http://www.gorillawalker.com/controlling-in-plant-airborne-contaminants-systems-design-and-calculations-mechanical.pdf
    • http://www.gorillawalker.com/wave-motion-intelligent-structures-and-nonlinear-mechanics-a-herbert-uberall.pdf
    • http://www.gorillawalker.com/the-code-of-civil-procedure-of-saint-lucia.pdf
    • http://www.gorillawalker.com/the-essential-epicurus-great-books-in-philosophy.pdf
    • http://www.gorillawalker.com/burning-bed-kindle-edition.pdf
    • http://www.gorillawalker.com/overcoming-addiction-a-twelve-step-companion-guide.pdf
    • http://www.gorillawalker.com/into-the-valley-of-death-the-british-cavalry-division-at.pdf
    • http://www.gorillawalker.com/gender-and-lifecycles-oxfam-focus-on-gender-series.pdf
    • http://www.gorillawalker.com/hell-s-angel-the-autobiography-of-sonny-barger-kindle-edition.pdf
    • http://www.gorillawalker.com/identification-of-time-varying-processes.pdf
    • http://www.gorillawalker.com/the-medal-roll-of-the-corps-of-royal-engineers-campaign.pdf
    • http://www.gorillawalker.com/is-our-gospel-the-gospel.pdf
    • http://www.gorillawalker.com/the-passion-of-darius-the-blackstone-affair-book-1-kindle.pdf
    • http://www.gorillawalker.com/sidney-poitier-black-americans-of-achievement-series.pdf
    • http://www.gorillawalker.com/what-is-culture-our-multicultural-world.pdf
    • http://www.gorillawalker.com/conversation-and-technology-from-the-telephone-to-the-internet.pdf
    • http://www.gorillawalker.com/the-bal
    • 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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