Malicious PDF — malware analysis report

Static analysis result for SHA-256 5844418fd74f5a7a…

MALICIOUS

PDF

41.7 KB Created: 2018-11-23 21:03:19 +03:00 Authoring application: FrameMaker 7.0 (via Acrobat Distiller 7.0 (Windows))
MD5: ce123138d9ced52cebf5ad4651ba25d7 SHA-1: fe8cb2ef2c2e784dd1706dda1c72ce4921b961a3 SHA-256: 5844418fd74f5a7a096c1ca6ea8e4a4dc59f804c964c43912c1c6f701255254f
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine a more specific attack pattern.

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/weight-watchers-7-day-menu-planners-top-10.pdf
    • http://www.gorillawalker.com/waterfalls-of-jamaica-sublime-and-beautiful-objects.pdf
    • http://www.gorillawalker.com/power-play-awakening-volume-2.pdf
    • http://www.gorillawalker.com/the-alternative-introduction-to-biological-anthropology.pdf
    • http://www.gorillawalker.com/nabokov-s-invitation-to-a-beheading-a-critical-companion-northwestern.pdf
    • http://www.gorillawalker.com/when-a-family-member-has-ocd-mindfulness-and-cognitive-behavioral.pdf
    • http://www.gorillawalker.com/troublesome-things-a-history-of-fairies-and-fairy-stories-allen.pdf
    • http://www.gorillawalker.com/exit-polls-surveying-the-american-electorate-1927-2010.pdf
    • http://www.gorillawalker.com/sean-fallon-celtic-s-iron-man-the-authorised-biography.pdf
    • http://www.gorillawalker.com/in-the-morning-i-ll-be-gone-a-detective-sean.pdf
    • http://www.gorillawalker.com/beauvallet.pdf
    • http://www.gorillawalker.com/logistics-engineering-logistics-management-bachelor-chinese-edition.pdf
    • http://www.gorillawalker.com/easy-classical-alto-recorder-solos-featuring-music-of-bach-mozart.pdf
    • http://www.gorillawalker.com/left-behind-children-in-rural-china-the-impact-of-change.pdf
    • http://www.gorillawalker.com/industrial-inorganic-pigments.pdf
    • http://www.gorillawalker.com/only-the-ring-finger-knows-yaoi.pdf
    • http://www.gorillawalker.com/earth-observation-data-policy-and-europe.pdf
    • http://www.gorillawalker.com/heidegger-s-analytic-interpretation-discourse-and-authenticity-in-being-and.pdf
    • http://www.gorillawalker.com/icd-10-medical-terminology-and-anatomy-for-ophthalmology-and-optometry.pdf
    • http://www.gorillawalker.com/the-price-of-victory-dk-graphic-readers-novels.pdf
    • http://www.gorillawalker.com/searching-for-solace-dealing-with-my-father-s-suicide.pdf
    • http://www.gorillawalker.com/michelin-green-guide-provence-michelin-green-guides.pdf
    • http://www.gorillawalker.com/like-glue-making-relationships-stick-member-book-bible-studies-for.pdf
    • http://www.gorillawalker.com/la-favorite-overture-full-score-a4801.pdf
    • http://www.gorillawalker.com/chemical-reaction-hazards-a-guide-to-safety-second-edition.pdf
    • http://www.gorillawalker.com/so-you-want-to-franchise-your-business.pdf
    • http://www.gorillawalker.com/the-admirable-crichton-dramatised-unabridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/video-poker-winners-guide-2-to-double-bonus-poker-3.pdf
    • http://www.gorillawalker.com/kawasaki-400-500-550-fours-1979-to-1991-owners-workshop.pdf
    • http://www.gorillawalker.com/the-logic-of-metaphor-analogous-parts-of-possible-worlds-synthese.pdf
    • http://www.gorillawalker.com/beer-and-skittles.pdf
    • http://www.gorillawalker.com/great-source-aim-student-edition-grades-7-8-level-g.pdf
    • http://www.gorillawalker.com/nonlinear-and-stochastic-dynamics-amd.pdf
    • http://www.gorillawalker.com/rocky-horror-from-concept-to-cult.pdf
    • http://www.gorillawalker.com/dreamscapes-fantasy-worlds-create-engaging-scenes-and-landscapes-in-watercolor.pdf
    • http://www.gorillawalker.com/paradox-of-the-liar.pdf
    • http://www.gorillawalker.com/if-you-know-one-digit-of-the-pick-5-kindle.pdf
    • http://www.gorillawalker.com/stop-arthritis-how-i-defeated-it-naturally.pdf
    • http://www.gorillawalker.com/understanding-influenza.pdf
    • http://www.gorillawalker.com/the-real-estate-math-handbook-simplified-solutions-for-the-real.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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