Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce7b988126c6ca39…

MALICIOUS

PDF

43.8 KB Created: 2019-02-13 19:53:52 +03:00 Authoring application: FrameMaker 11.0.2 (via Acrobat Elements 10.0.0 (Windows))
MD5: 10c7431274d01907b06af835c7b21f72 SHA-1: 48d0acce2cdb6e54485a9d6bab6a0eb20f27cb3f SHA-256: ce7b988126c6ca39ffab857eeac55c1506dbd676b0f1963e6a174daf11a0594c
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a machine learning classifier as malicious and contains a large number of embedded external links, suggesting a link farm or distribution mechanism. The primary heuristic indicates a 'PDF_SEO_LINK_FARM' with 32 external PDF links, predominantly pointing to URLs on 'gorillawalker.com'. While no scripts were extracted, the sheer volume of links and the ML classification strongly suggest malicious intent, likely related to SEO spam or distributing further malicious content. The document body itself is heavily obfuscated and does not provide clear textual clues.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8439

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/the-philosopher-s-stone.pdf
    • http://www.gorillawalker.com/le-sentier-des-nids-d-araign-e.pdf
    • http://www.gorillawalker.com/the-obvious-elephant.pdf
    • http://www.gorillawalker.com/making-votes-count-strategic-coordination-in-the-world-s-electoral.pdf
    • http://www.gorillawalker.com/moral-tribes-emotion-reason-and-the-gap-between-us-and.pdf
    • http://www.gorillawalker.com/armed-and-dangerous-from-undercover-struggle-to-freedom.pdf
    • http://www.gorillawalker.com/obsidian-apocalypse.pdf
    • http://www.gorillawalker.com/black-french-and-african-a-life-of-l-opold-s.pdf
    • http://www.gorillawalker.com/hearing-in-time-psychological-aspects-of-musical-meter.pdf
    • http://www.gorillawalker.com/a-life-that-really-matters-the-story-of-the-john.pdf
    • http://www.gorillawalker.com/a-primer-of-linear-algebra.pdf
    • http://www.gorillawalker.com/later-essays-noguchi-project-editions.pdf
    • http://www.gorillawalker.com/creative-glass-blowing-scientific-and-ornamental.pdf
    • http://www.gorillawalker.com/planning-an-african-safari-for-the-everyday-working-man.pdf
    • http://www.gorillawalker.com/how-to-make-a-rap-how-to-write-a-rap.pdf
    • http://www.gorillawalker.com/holt-literature-and-language-arts-california-student-edition-grade-12.pdf
    • http://www.gorillawalker.com/how-i-stopped-being-a-jew.pdf
    • http://www.gorillawalker.com/lee-miller-a-life.pdf
    • http://www.gorillawalker.com/on-repentance-and-almsgiving-fathers-of-the-church.pdf
    • http://www.gorillawalker.com/in-the-catholic-way-children-young-people-and-the-church.pdf
    • http://www.gorillawalker.com/shadows-hold-their-breath.pdf
    • http://www.gorillawalker.com/christology-from-the-margins.pdf
    • http://www.gorillawalker.com/the-creation-die-schopfung-a-kalmus-classic-edition-german-edition.pdf
    • http://www.gorillawalker.com/afloat-on-the-ohio-an-historical-pilgrimage-of-a-thousand.pdf
    • http://www.gorillawalker.com/fiscal-federalism-and-fiscal-decentralization-in-europe-foster-europe-international.pdf
    • http://www.gorillawalker.com/paediatric-rehabilitation-engineering-from-disability-to-possibility-rehabilitation-science-in.pdf
    • http://www.gorillawalker.com/primal-leadership-realizing-the-power-of-emotional-intelligence.pdf
    • http://www.gorillawalker.com/contradictions-artistic-life-the-socialist-state-and-the-chinese-painter.pdf
    • http://www.gorillawalker.com/iec-60255-22-7-ed-1-0-b-2003-electrical.pdf
    • http://www.gorillawalker.com/the-last-contrail.pdf
    • http://www.gorillawalker.com/paid-laid-the-interview-the-paid-laid-series-book-1.pdf
    • http://www.gorillawalker.com/tienes-un-minuto-al-dia-para-mejorar-tu-salud-spanish.pdf
    • http://www.gorillawalker.com/war-at-a-distance-romanticism-and-the-making-of-modern.pdf
    • http://www.gorillawalker.com/managing-the-chronic-pain-patient-theory-and-practice-at-the.pdf
    • http://www.gorillawalker.com/flight-of-passage-the-sanddancer.pdf
    • http://www.gorillawalker.com/doors-to-the-sacred-kindle-edition.pdf
    • http://www.gorillawalker.com/the-adventures-of-cammy-lambie-in-the-place-of-the.pdf
    • http://www.gorillawalker.com/family-man.pdf
    • http://www.gorillawalker.com/form-i-fokus-ovningsbok-i-svensk-grammatik-book-b-swedish.pdf
    • http://www.gorillawalker.com/from-artefacts-to-atoms-the-bipm-and-the-search-for.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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