Malicious PDF — malware analysis report

Static analysis result for SHA-256 03559d0a8853fb18…

MALICIOUS

PDF

40.5 KB Created: 2019-03-17 11:02:36 +03:00 Authoring application: soft Xpansion Perfect PDF 5 Premium (via PDF Xpansion 5.7.8)
MD5: ff6a770b53a6e00cc7f4f4ca1004f578 SHA-1: 17b9172b6506be720294329c49d3e815bd869922 SHA-256: 03559d0a8853fb18be8a00177770fd6a08a9884ba765f281553de67f80fdae37
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The critical heuristic PDF_SEO_LINK_FARM indicates the presence of 32 external PDF links, with the first being http://www.gorillawalker.com/realidades-level-1-student-edition.pdf. This suggests the document's primary purpose is to redirect users to a large number of other documents, likely for SEO manipulation or to serve as a distribution point for further malicious content. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the immediate intent beyond link distribution.

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/realidades-level-1-student-edition.pdf
    • http://www.gorillawalker.com/cross-channel-france-nord-pas-de-calais-the-land-beyond.pdf
    • http://www.gorillawalker.com/easements-relating-to-land-surveying-and-title-examination.pdf
    • http://www.gorillawalker.com/give-me-your-hand-selected-works-from-the-compas-writers.pdf
    • http://www.gorillawalker.com/holt-environmental-science-student-edition-2006.pdf
    • http://www.gorillawalker.com/alice-diamond-and-the-forty-elephants-the-female-gang-that.pdf
    • http://www.gorillawalker.com/supervillainz.pdf
    • http://www.gorillawalker.com/life-in-the-west-true-books.pdf
    • http://www.gorillawalker.com/the-classic-guide-to-boxing.pdf
    • http://www.gorillawalker.com/list-of-available-publications-of-the-united-states-department-of.pdf
    • http://www.gorillawalker.com/collins-pocket-portuguese-dictionary-portuguese-and-english-edition.pdf
    • http://www.gorillawalker.com/the-borgias-and-their-enemies-1431-1519.pdf
    • http://www.gorillawalker.com/vegetarian-cooking-stir-fried-konnyaku-rice-with-tofu-cucumber-and.pdf
    • http://www.gorillawalker.com/proyecto-de-ley-de-comunicaci.pdf
    • http://www.gorillawalker.com/bridge-engineering-third-edition-3rd-third-edition-by-zhao-jim.pdf
    • http://www.gorillawalker.com/chess-openings-conquer-your-friends-with-4-daredevil-openings-for.pdf
    • http://www.gorillawalker.com/we-see-a-different-frontier-a-postcolonial-speculative-fiction-anthology.pdf
    • http://www.gorillawalker.com/the-eagle-the-nightingales.pdf
    • http://www.gorillawalker.com/insect-defenses-the-world-of-insects.pdf
    • http://www.gorillawalker.com/ultimate-boat-wall-calendar-2002.pdf
    • http://www.gorillawalker.com/fair-game-the-rules-volume-1.pdf
    • http://www.gorillawalker.com/apollo-concerto-2-for-oboe-score-and-parts-for-orchestra.pdf
    • http://www.gorillawalker.com/epic-into-novel-henry-fielding-scriblerian-satire-and-the-consumption.pdf
    • http://www.gorillawalker.com/book-sidekick-private-l-a.pdf
    • http://www.gorillawalker.com/brandon-the-wilde-brothers-the-billionaire-s-desire-volume-2.pdf
    • http://www.gorillawalker.com/comfort-and-design-principles-and-good-practice.pdf
    • http://www.gorillawalker.com/the-twelve-days-of-christmas-in-north-carolina-the-twelve.pdf
    • http://www.gorillawalker.com/darwin-and-the-novelists-patterns-of-science-in-victorian-fiction.pdf
    • http://www.gorillawalker.com/miniature-concerto-for-piano-and-orchestra-sheet-music.pdf
    • http://www.gorillawalker.com/obamacare-loopholes-freedom-to-not-participate.pdf
    • http://www.gorillawalker.com/preaching-that-changes-lives.pdf
    • http://www.gorillawalker.com/epilepsy-syndromes-expert-consult-online-print-and-dvd-1e.pdf
    • http://www.gorillawalker.com/ms-frizzle-s-adventures-imperial-china-from-the-creator-of.pdf
    • http://www.gorillawalker.com/border-vol-2-yaoi-manga-kindle-edition.pdf
    • http://www.gorillawalker.com/the-spider-and-the-fly.pdf
    • http://www.gorillawalker.com/cypress-tree.pdf
    • http://www.gorillawalker.com/mcgraw-hill-education-400-must-have-words-for-the-toefl.pdf
    • http://www.gorillawalker.com/american-history-stories-volumes-i-iv.pdf
    • http://www.gorillawalker.com/the-structure-of-sociological-theory.pdf
    • http://www.gorillawalker.com/32-lays-later-the-list-2.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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