Malicious PDF — malware analysis report

Static analysis result for SHA-256 797b2081ec340445…

MALICIOUS

PDF

43.5 KB Created: 2018-12-15 08:35:21 +03:00 Authoring application: TeX (via pdfTeX-0.14h)
MD5: 0a07c11a324614bed165700794861c61 SHA-1: a6640580cbf7fa0e7c6c3bae39f6c7aca3eeb91f SHA-256: 797b2081ec3404457723d8536efde4af76545858900b08689f407060293b95af
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link-farming or content distribution scheme. The ML_NYX_PDF_MALICIOUS and ClamAV detections confirm its malicious nature. While no scripts were explicitly extracted, the embedded URLs are the primary indicators of compromise, likely serving as download locations for further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8683

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-7274972-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7274972-0
  • 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-balance-of-nature-ecological-issues-in-the-conservation-of.pdf
    • http://www.gorillawalker.com/fiercely-driven.pdf
    • http://www.gorillawalker.com/the-girl-god-wants-kindle-edition.pdf
    • http://www.gorillawalker.com/instrumental-titration-techniques-principles-and-applications-of-the-volumetric-analysis.pdf
    • http://www.gorillawalker.com/stir-it-up-lessons-in-community-organizing-and-advocacy-the.pdf
    • http://www.gorillawalker.com/santiago-de-chile-walking-tour-walking-tours-kindle-edition.pdf
    • http://www.gorillawalker.com/leishmania-and-leishmaniasis-springerbriefs-in-immunology.pdf
    • http://www.gorillawalker.com/the-economist-guide-to-financial-markets-6th-ed-why-they.pdf
    • http://www.gorillawalker.com/the-iep-checklist-your-guide-to-creating-meaningful-and-compliant.pdf
    • http://www.gorillawalker.com/emma-goldman-a-documentary-history-of-the-american-years-vol.pdf
    • http://www.gorillawalker.com/mystical-works-of-russian-writers-russian-edition.pdf
    • http://www.gorillawalker.com/complete-science-of-wrestling-original-version-restored.pdf
    • http://www.gorillawalker.com/football-2000-fascinating-facts-funfax.pdf
    • http://www.gorillawalker.com/review-of-medical-embryology.pdf
    • http://www.gorillawalker.com/cello-concerto-in-a-minor-rv-422-solo-cello-part.pdf
    • http://www.gorillawalker.com/puppets-and-pockets-from-paper-plates-reproducible-classroom-activity-books.pdf
    • http://www.gorillawalker.com/thermodynamik-des-kraftfahrzeugs-german-edition.pdf
    • http://www.gorillawalker.com/how-to-gracefully-exit-a-relationship.pdf
    • http://www.gorillawalker.com/kohala-tiki-series-concert-ukulele-linden-wood-built-in-tuner.pdf
    • http://www.gorillawalker.com/the-sailor-s-assistant-reference-data-for-maintenance-repair-and.pdf
    • http://www.gorillawalker.com/casenote-legal-briefs-family-law-keyed-to-wadlington-o-brien.pdf
    • http://www.gorillawalker.com/math-video-tutor-dvd-1-video-tutor.pdf
    • http://www.gorillawalker.com/finite-mathematics-for-business-economics-life-sciences-and-social-sciences.pdf
    • http://www.gorillawalker.com/marxism-existentialism.pdf
    • http://www.gorillawalker.com/avoiding-risky-sex-in-adolescence-parent-adolescent-and-child-training.pdf
    • http://www.gorillawalker.com/life-kindle-edition.pdf
    • http://www.gorillawalker.com/ransom-river.pdf
    • http://www.gorillawalker.com/a-blackbird-fabulation-3pac-kindle-edition.pdf
    • http://www.gorillawalker.com/anuario-estad-stico-de-venezuela-chinese-edition.pdf
    • http://www.gorillawalker.com/how-to-build-ponds-and-waterfalls-and-much-more-the.pdf
    • http://www.gorillawalker.com/encyclopedia-of-cognitive-behavior-therapy-social-indicators-research-series.pdf
    • http://www.gorillawalker.com/forced-labour-and-human-trafficking-casebook-of-court-decisions-a.pdf
    • http://www.gorillawalker.com/plays-pleasant-shaw.pdf
    • http://www.gorillawalker.com/revolutionary-war-almanac-almanacs-of-american-wars.pdf
    • http://www.gorillawalker.com/wedding-photography-the-complete-guide.pdf
    • http://www.gorillawalker.com/sex-selective-abortion-in-india-the-impact-on-child-mortality.pdf
    • http://www.gorillawalker.com/specifications-for-highway-bridges-one-common-hen-hen-3-concrete.pdf
    • http://www.gorillawalker.com/cathedrals-and-abbeys-of-england-and-wales-blue-guides.pdf
    • http://www.gorillawalker.com/to-herland-and-beyond-the-life-and-work-of-charlotte.pdf
    • http://www.gorillawalker.com/ancient-rome-how-it-affects-you-today-an-uncle-eric.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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