Malicious PDF — malware analysis report

Static analysis result for SHA-256 1666a70d757aeb2c…

MALICIOUS

PDF

42.8 KB Created: 2018-11-23 20:59:02 +03:00 Authoring application: QuarkXPressª 4.11: AdobePS 8.7.3 (301) (via Acrobat Distiller 5.0.5 for Macintosh)
MD5: f398b5c5e1146705aa69ea4ab221c1e4 SHA-1: 178b9e695ccb244ce9fbb65ff2692632741c09bc SHA-256: 1666a70d757aeb2c5dddece61dc07ade445bdaacb04131713621d78f0af03240
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. ClamAV detection and ML classification strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a dropper or downloader functionality, potentially leveraging JavaScript for execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8698

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-7232869-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7232869-0
  • 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-everything-vegetarian-pressure-cooker-cookbook.pdf
    • http://www.gorillawalker.com/best-lesbian-erotica-2008.pdf
    • http://www.gorillawalker.com/psychopathia-sexualis-the-classic-study-of-deviant-sex.pdf
    • http://www.gorillawalker.com/women-s-issues-in-gastrointestinal-endoscopy-an-issue-of-gastrointestinal.pdf
    • http://www.gorillawalker.com/the-artful-journey-cultivating-and-soliciting-the-major-gift.pdf
    • http://www.gorillawalker.com/touch-magic.pdf
    • http://www.gorillawalker.com/escape-from-mount-moriah-memoirs-of-a-refugee-child-s.pdf
    • http://www.gorillawalker.com/eat-cried-little-pig.pdf
    • http://www.gorillawalker.com/polar-bears-amazing-pictures-and-facts-about-polar-bears-let.pdf
    • http://www.gorillawalker.com/the-portable-mba-in-marketing.pdf
    • http://www.gorillawalker.com/mitos-y-leyendas-de-los-aztecas-incas-mayas-y-muiscas.pdf
    • http://www.gorillawalker.com/just-cause-a-union-guide-to-winning-discipline-cases.pdf
    • http://www.gorillawalker.com/castelao-en-cuba-documentos-para-a-historia-contemporanea-de-galicia.pdf
    • http://www.gorillawalker.com/the-chaste-nightmare-a-fem-dom-story-of-enforced-male.pdf
    • http://www.gorillawalker.com/domestic-violence-and-the-islamic-tradition-oxford-islamic-legal-studies.pdf
    • http://www.gorillawalker.com/a-history-of-the-federal-reserve-volume-2-book-1.pdf
    • http://www.gorillawalker.com/pablo-escobar-mi-padre-edici-n-espa-ola-radiograf-a.pdf
    • http://www.gorillawalker.com/engineering-graphics-and-design-a-problem-solving-approach-with-worksheets.pdf
    • http://www.gorillawalker.com/the-well-dressed-ape-natural-history-of-myself-byholmes.pdf
    • http://www.gorillawalker.com/rhcsa-rhce-red-hat-linux-certification-study-guide-exams-ex200.pdf
    • http://www.gorillawalker.com/the-exciplex.pdf
    • http://www.gorillawalker.com/there-are-many-ways-to-die-while-travelling-in-peru.pdf
    • http://www.gorillawalker.com/children-s-drawings-as-diagnostic-aids.pdf
    • http://www.gorillawalker.com/autism-through-a-sister-s-eyes-a-book-for-children.pdf
    • http://www.gorillawalker.com/cambridge-international-as-level-history-of-the-usa-1840-1941.pdf
    • http://www.gorillawalker.com/toward-sustainable-communities-solutions-for-citizens-and-their-governments.pdf
    • http://www.gorillawalker.com/society-finches.pdf
    • http://www.gorillawalker.com/how-to-play-djembe-book-cd-set.pdf
    • http://www.gorillawalker.com/chrismon-snowflake-ornaments-32-christ-filled-ornaments.pdf
    • http://www.gorillawalker.com/madness-asher-benson-book-2-kindle-edition.pdf
    • http://www.gorillawalker.com/excel-for-finite-mathematics.pdf
    • http://www.gorillawalker.com/beyond-our-dreams-spiritual-and-christian-adventures-in-the-astral.pdf
    • http://www.gorillawalker.com/public-works-contract-for-civil-engineering-works-designed-by-the.pdf
    • http://www.gorillawalker.com/obnoxious-librarian-from-hades.pdf
    • http://www.gorillawalker.com/ase-test-preparation-p2-parts-specialist.pdf
    • http://www.gorillawalker.com/writing-and-reading-across-the-curriculum-13th-edition.pdf
    • http://www.gorillawalker.com/annotations-to-surplus-lines-statutes.pdf
    • http://www.gorillawalker.com/under-the-sea-magnetic-story-play-scene.pdf
    • http://www.gorillawalker.com/west-s-social-security-disability-practice-2006.pdf
    • http://www.gorillawalker.com/xaragua-cienfuegos-vi-bestseller-bibioteca-alberto-vazquz-figueroa-spanish-edition.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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