Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e5c31a6bafb2bd9…

MALICIOUS

PDF

44.5 KB Created: 2018-12-15 08:53:28 +03:00 Authoring application: - (via Multivalent Merge)
MD5: fd2c2ae642b38e2934193122b07b759e SHA-1: 80e5a19555bab583f5f6b0f2913237b3d046dff5 SHA-256: 4e5c31a6bafb2bd9720bde60a4b078c9250d9e54cdd62464eda939575ff46cf6
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to host malicious content. The ML classifier also flagged this PDF as malicious. The primary attack pattern observed is the distribution of a large link farm, likely intended to drive traffic or distribute further malware. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9007

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/amazon-echo-amazon-echo-user-manual-2nd-edition-tech-geek.pdf
    • http://www.gorillawalker.com/hesburgh-a-biography.pdf
    • http://www.gorillawalker.com/paradiso-version-for-chamber-ensemble.pdf
    • http://www.gorillawalker.com/rock-climbing-colorado.pdf
    • http://www.gorillawalker.com/introduction-to-rf-and-microwave-passive-components.pdf
    • http://www.gorillawalker.com/an-elephant-family-adventure-the-elephants-tour-england.pdf
    • http://www.gorillawalker.com/365-things-people-believe-that-aren-t-true-the-misconception.pdf
    • http://www.gorillawalker.com/key-insights-from-winning-blinkist-summaries-book-9-kindle-edition.pdf
    • http://www.gorillawalker.com/alpine-sierra-trailblazer-where-to-hike-ski-bike-fish-and.pdf
    • http://www.gorillawalker.com/dennis-the-menace-1-the-classic-comicbooks.pdf
    • http://www.gorillawalker.com/the-elements-manganese.pdf
    • http://www.gorillawalker.com/the-holy-bible-in-falam-chin-language-color-maps-revised.pdf
    • http://www.gorillawalker.com/the-cambridge-history-of-australian-literature.pdf
    • http://www.gorillawalker.com/essays-on-cuban-music-north-american-and-cuban-perspectives.pdf
    • http://www.gorillawalker.com/functional-mapping-of-organ-systems-and-other-computer-topics-11th.pdf
    • http://www.gorillawalker.com/klepto.pdf
    • http://www.gorillawalker.com/traditional-japanese-fashions-paper-dolls-dover-paper-dolls.pdf
    • http://www.gorillawalker.com/rudder-from-leader-to-legend-centennial-series-of-the-association.pdf
    • http://www.gorillawalker.com/princess-who-learned-to-share-marvelous-manners.pdf
    • http://www.gorillawalker.com/garden-planner-your-personal-garden-planner-office-equipment-supplies-for.pdf
    • http://www.gorillawalker.com/nat-rliche-menopause.pdf
    • http://www.gorillawalker.com/apa-dictionary-of-lifespan-developmental-psychology.pdf
    • http://www.gorillawalker.com/meaning-agency-and-colonial-history-navosavakadua-and-the-tuka-movement.pdf
    • http://www.gorillawalker.com/the-ghosts-of-autumn-a-season-of-hunting-stories.pdf
    • http://www.gorillawalker.com/le-quebec-2013-7x7-mini-wall-french-edition.pdf
    • http://www.gorillawalker.com/honda-cb550-and-650-1983-1985-service-repair-maintenance-clymer.pdf
    • http://www.gorillawalker.com/dive-the-bahamas-complete-guide-to-diving-and-snorkelling-interlink.pdf
    • http://www.gorillawalker.com/on-the-philosophy-of-logic-wadsworth-philosophical-topics.pdf
    • http://www.gorillawalker.com/intro-to-statistical-signal-procing-the-aksen-associates-series-in.pdf
    • http://www.gorillawalker.com/the-finished-work-of-christ-the-truth-of-romans-1.pdf
    • http://www.gorillawalker.com/poptopics-mythology-1-poptropica.pdf
    • http://www.gorillawalker.com/microsoft-outlook-2010-introductory-sam-2010-compatible-products.pdf
    • http://www.gorillawalker.com/t-boy-and-the-terrible-turtle-revised-one-rascal-reptile.pdf
    • http://www.gorillawalker.com/beverly-cleary-united-states-authors-series.pdf
    • http://www.gorillawalker.com/living-buildings-architectural-conservation-philosophy-principles-and-practice.pdf
    • http://www.gorillawalker.com/atlas-of-hispanic-american-history-facts-on-file-library-of.pdf
    • http://www.gorillawalker.com/arms-of-little-value-the-challenge-of-insurgency-and-global.pdf
    • http://www.gorillawalker.com/learn-to-play-go-vol-5-the-palace-of-memory.pdf
    • http://www.gorillawalker.com/caa-region-3-northern-ireland.pdf
    • http://www.gorillawalker.com/quality-is-free-the-art-of-making-quality-certain-how.pdf
    • http://www.gorillawalker.com/alpine-sierra-trailblazer-where-to-hike-ski-bike-fish-and.p
    • 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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