Malicious PDF — malware analysis report

Static analysis result for SHA-256 808f3c5d54b766b2…

MALICIOUS

PDF

36.9 KB Created: 2019-12-14 07:08:20 +03:00 Authoring application: calibre 0.9.2 [http://calibre-ebook.com] (via PoDoFo - http://podofo.sf.net)
MD5: 90066ae9a3d37d483d5c98668ba250c9 SHA-1: ad33db09daffdee2a9eba0c950244fdab74721e3 SHA-256: 808f3c5d54b766b25e571e14aaccbfedbfe6ebcd644c310e3e91553e65c6d9c4
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by a machine learning classifier and a critical heuristic for containing a large number of external PDF links. These links point to various book titles on the domain 'gorillawalker.com'. The presence of a link farm suggests an attempt to manipulate search engine results or to distribute potentially malicious content disguised as legitimate documents. No scripts were extracted, and the document body was unreadable.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8196

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/compensation-management-in-a-knowledge-based-world-10th-edition.pdf
    • http://www.gorillawalker.com/tarantula-spiders-abdo-kids-spiders.pdf
    • http://www.gorillawalker.com/making-avonlea-l-m-montgomery-and-popular-culture.pdf
    • http://www.gorillawalker.com/beyond-the-gold-what-every-church-needs-to-know-about.pdf
    • http://www.gorillawalker.com/hard-drive-bill-gates-and-the-making-of-the-microsoft.pdf
    • http://www.gorillawalker.com/oxford-reading-tree-story-sparks-oxford-level-9-class-pack.pdf
    • http://www.gorillawalker.com/three-patients-international-perspective-on-intensive-care-at-the-end.pdf
    • http://www.gorillawalker.com/greenhouse-operation-and-management-third-edition.pdf
    • http://www.gorillawalker.com/in-and-out-of-fashion.pdf
    • http://www.gorillawalker.com/the-politics-of-unreason-right-wing-extremism-in-america-1790.pdf
    • http://www.gorillawalker.com/tears-of-the-ancients-the-untold-story-of-vidar-the.pdf
    • http://www.gorillawalker.com/stem-cells-and-regenerative-medicine-patents-and-clinical-trials-stem.pdf
    • http://www.gorillawalker.com/woman-to-woman-sexual-violence-does-she-call-it-rape.pdf
    • http://www.gorillawalker.com/the-house-that-wisdom-built.pdf
    • http://www.gorillawalker.com/cricket-explained.pdf
    • http://www.gorillawalker.com/biograf-a-universal-antigua-y-moderna-o-historia-por-orden.pdf
    • http://www.gorillawalker.com/community-perception-on-rangeland-degradation-and-vegetation-changes-in-the.pdf
    • http://www.gorillawalker.com/bud-powell-mfm-82-jazz-masters.pdf
    • http://www.gorillawalker.com/the-mentor-as-coach-an-introduction-to-coaching-as-a.pdf
    • http://www.gorillawalker.com/human-parasitology-fourth-edition-by-bogitsh-burton-j-published-by.pdf
    • http://www.gorillawalker.com/the-long-island-rail-road-in-early-photographs-dover-transportation.pdf
    • http://www.gorillawalker.com/between-niger-and-nile-with-maps.pdf
    • http://www.gorillawalker.com/double-vision-perspectives-on-gender-and-the-visual-arts.pdf
    • http://www.gorillawalker.com/paying-more-for-less-sums-up-umbrella-renewals-cover-story.pdf
    • http://www.gorillawalker.com/hermeneutics-and-the-human-sciences-essays-on-language-action-and.pdf
    • http://www.gorillawalker.com/katie-goes-to-the-hospital.pdf
    • http://www.gorillawalker.com/high-school-dropout-to-harvard.pdf
    • http://www.gorillawalker.com/insider-s-guide-to-book-editors-publishers-and-literary-agents.pdf
    • http://www.gorillawalker.com/chorale-augsburg-organ-library.pdf
    • http://www.gorillawalker.com/historians-on-the-homefront-american-propagandists-for-the-great-war.pdf
    • http://www.gorillawalker.com/victorian-murderesses-a-true-history-of-thirteen-respectable-french-and.pdf
    • http://www.gorillawalker.com/kaplan-asvab-2011-kaplan-asvab-2011-by-kaplan-paperback-on.pdf
    • http://www.gorillawalker.com/the-pacific-northwest-coast-living-with-the-shores-of-oregon.pdf
    • http://www.gorillawalker.com/a-christmas-carol-with-connections.pdf
    • http://www.gorillawalker.com/employment-revival-in-europe-labour-market-success-in-austria-denmark.pdf
    • http://www.gorillawalker.com/consecutive-sudoku-hard-volume-4-276-logic-puzzles.pdf
    • http://www.gorillawalker.com/the-conga-drummer-s-guidebook-includes-audio-cd.pdf
    • http://www.gorillawalker.com/modern-cook-a-practical-guide-to-the-culinary-art-in.pdf
    • http://www.gorillawalker.com/all-about-the-little-small-red-hen-animal-adventure-for.pdf
    • http://www.gorillawalker.com/what-can-i-play-on-sunday-alfred-s-sacred-performer.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://calibre-ebook.com
    • http://ns.adobe.com/pdf/1.3/
    • http://podofo.sf.net
    • 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#
    +1 more URL(s)

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