Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c972959ffea1184…

MALICIOUS

PDF

43.8 KB Created: 2018-12-14 21:11:08 +03:00 Authoring application: Adobe Acrobat Pro 11.0.0
MD5: bc68a0aa4bd9485360ed91b0666f7c76 SHA-1: 212fc6c5c5ac0cc9872a9961b5858578bf0e2a73 SHA-256: 3c972959ffea1184ffbc49e3f46f5c6ef63b133356db785f03851115e1201727
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links pointing to external PDF files on the domain gorillawalker.com. This technique, identified as a PDF SEO link farm, is often used to distribute malicious content or to manipulate search engine results. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9171

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/no-peace-without-freedom-race-and-the-women-s-international.pdf
    • http://www.gorillawalker.com/the-psychology-of-interrogations-confessions-and-testimony-wiley-series-in.pdf
    • http://www.gorillawalker.com/walk-the-south-hams-coast-salcombe-to-plymouth.pdf
    • http://www.gorillawalker.com/the-church-in-the-market-place.pdf
    • http://www.gorillawalker.com/client-server-developer-s-guide-with-delphi-3-with-cdrom.pdf
    • http://www.gorillawalker.com/stand-out-l4-text-grammar-challenge.pdf
    • http://www.gorillawalker.com/art-without-compromise.pdf
    • http://www.gorillawalker.com/meet-casey-jones-teenage-mutant-ninja-turtles-teenage-mutant-ninja.pdf
    • http://www.gorillawalker.com/iso-iec-8613-9-1996-information-technology-open-document-architecture.pdf
    • http://www.gorillawalker.com/music-minus-one-trumpet-trumpet-solos-student-level-vol-i.pdf
    • http://www.gorillawalker.com/the-heart-of-the-prophetic.pdf
    • http://www.gorillawalker.com/ben-folds-supersunnyspeedgrasupersunnyspeedgraphic-piano-transcriptions-and-vocal-book.pdf
    • http://www.gorillawalker.com/worldwide-government-directory-with-intergovernmental-organizations-2013-nations-intergovernmental-organizations.pdf
    • http://www.gorillawalker.com/wwii-tank-encyclopaedia-1939-45.pdf
    • http://www.gorillawalker.com/dis-ease-in-the-colonial-state-medicine-society-and-social.pdf
    • http://www.gorillawalker.com/traveling-in-south-carolina-a-selective-guide-to-where-to.pdf
    • http://www.gorillawalker.com/a-pure-drop-the-life-of-jeff-buckley.pdf
    • http://www.gorillawalker.com/arizona-and-new-mexico-know-your-america-program.pdf
    • http://www.gorillawalker.com/preparemonos-para-la-adolescencia-como-sobrevivir-los-a-os-venideros.pdf
    • http://www.gorillawalker.com/poetry-for-students-presenting-analysis-context-and-criticism-on-commonly.pdf
    • http://www.gorillawalker.com/the-stalin-revolution-foundations-of-the-totalitarian-era-problems-in.pdf
    • http://www.gorillawalker.com/judges-and-judging-in-the-history-of-the-common-law.pdf
    • http://www.gorillawalker.com/professional-foundations-for-massage-therapists.pdf
    • http://www.gorillawalker.com/shiatsu-stretching.pdf
    • http://www.gorillawalker.com/a-house-in-bali.pdf
    • http://www.gorillawalker.com/last-minute-college-financing-it-s-never-too-late-to.pdf
    • http://www.gorillawalker.com/surgical-exposures-in-orthopaedics-the-anatomic-approach-hoppenfeld-surgical-exposures.pdf
    • http://www.gorillawalker.com/6-ways-auto-insurance-companies-screw-you-kindle-edition.pdf
    • http://www.gorillawalker.com/canon-classic-cameras-magic-lantern-guides.pdf
    • http://www.gorillawalker.com/ring-of-fire-an-indonesian-odyssey.pdf
    • http://www.gorillawalker.com/el-nido.pdf
    • http://www.gorillawalker.com/the-orchid-hunters-a-jungle-adventure.pdf
    • http://www.gorillawalker.com/young-hee-and-the-pullocho.pdf
    • http://www.gorillawalker.com/2014-2015-basic-and-clinical-science-course-bcsc-section-2.pdf
    • http://www.gorillawalker.com/nursery-numbers-book-2-bk-2.pdf
    • http://www.gorillawalker.com/arco-master-the-ssat-and-isee-2001-high-school-entrance.pdf
    • http://www.gorillawalker.com/eyewitness-guides-castle-collins-eyewitness-guides.pdf
    • http://www.gorillawalker.com/anti-missionary-arguments-meeting-the-challenges-posed-by-the-anti.pdf
    • http://www.gorillawalker.com/rayos-xxx-spanish-edition.pdf
    • http://www.gorillawalker.com/dirt-rag-the-mountain-bike-forum-magazize.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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