Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cfe9038d7008b4a…

MALICIOUS

PDF

43.0 KB Created: 2018-11-30 20:08:37 +03:00 Authoring application: LaTeX with hyperref package (via dvips + ps2pdf)
MD5: 52eec87df0c17a4188242287ed26ffab SHA-1: 736c329a784cdae5b135bbf5d9656c07c50f8f9c SHA-256: 1cfe9038d7008b4a8817150533ef78803eb5542747510ac2be64566013e25acf
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs pointing to PDF files on the domain 'gorillawalker.com'. This behavior is indicative of a link farm or SEO manipulation tactic, which can be used to distribute malicious content or to artificially inflate search engine rankings. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8698

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/visual-content-processing-and-representation-8th-international-workshop-vlbv-2003.pdf
    • http://www.gorillawalker.com/section-one-solar-initiative.pdf
    • http://www.gorillawalker.com/set-theory-and-the-structure-of-arithmetic.pdf
    • http://www.gorillawalker.com/40-top-rated-gluten-free-recipes-kindle-edition.pdf
    • http://www.gorillawalker.com/minecraft-diary-of-a-little-naked-sheep-minecraft-diary-book.pdf
    • http://www.gorillawalker.com/pocket-guides-egypt-red-sea-resorts-4th-thomas-cook-pocket.pdf
    • http://www.gorillawalker.com/ezra-nehemiah-lifechange.pdf
    • http://www.gorillawalker.com/my-dad-is-an-ironman.pdf
    • http://www.gorillawalker.com/the-celtic-golden-dawn-an-original-complete-curriculum-of-druidical.pdf
    • http://www.gorillawalker.com/the-ccl-guide-to-leadership-in-action-how-managers-and.pdf
    • http://www.gorillawalker.com/the-heavenly-surrender.pdf
    • http://www.gorillawalker.com/san-juan-island-s-grey-top-inn-soups-and-stews.pdf
    • http://www.gorillawalker.com/the-bunny-tale-an-easter-rhyming-story-holiday-stories-rhymes.pdf
    • http://www.gorillawalker.com/principles-of-computer-hardware.pdf
    • http://www.gorillawalker.com/tractors-farm-machines.pdf
    • http://www.gorillawalker.com/the-story-of-baden-powell-the-wolf-that-never-sleeps.pdf
    • http://www.gorillawalker.com/the-expedition-to-the-philippines-scholar-s-choice-edition.pdf
    • http://www.gorillawalker.com/introduction-to-networking-basics.pdf
    • http://www.gorillawalker.com/amazon-fire-tv-stick-made-easy-a-comprehensive-step-by.pdf
    • http://www.gorillawalker.com/the-nonlinear-schr-dinger-equation-self-focusing-and-wave-collapse.pdf
    • http://www.gorillawalker.com/the-scientific-evidences-of-organic-evolution-nature-series.pdf
    • http://www.gorillawalker.com/a-field-guide-to-the-moths-of-eastern-north-america.pdf
    • http://www.gorillawalker.com/law-and-regulation-of-common-carriers-in-the-communications-industry.pdf
    • http://www.gorillawalker.com/the-national-geographic-magazine-novermber-1939-vol-lxxvi-no-5.pdf
    • http://www.gorillawalker.com/atmosphere-an-introduction-to-meteorology-the-plus-masteringmeteorology-with-etext.pdf
    • http://www.gorillawalker.com/crystallography-and-crystal-chemistry.pdf
    • http://www.gorillawalker.com/powers.pdf
    • http://www.gorillawalker.com/strategy-game-programming-with-directx-9-wordware-game-and-graphics.pdf
    • http://www.gorillawalker.com/spacecraft-systems-engineering.pdf
    • http://www.gorillawalker.com/hercules-hotel-olympus.pdf
    • http://www.gorillawalker.com/bankruptcy-and-debtor-creditor-examples-explanations-5th-edition.pdf
    • http://www.gorillawalker.com/government-failure-society-markets-and-rules.pdf
    • http://www.gorillawalker.com/model-making-a-basic-guide-norton-professional-books-for-architects.pdf
    • http://www.gorillawalker.com/nick-of-the-woods.pdf
    • http://www.gorillawalker.com/netter-s-infectious-disease-1e-netter-clinical-science.pdf
    • http://www.gorillawalker.com/loving-lacie-i-m-the-best.pdf
    • http://www.gorillawalker.com/introduction-to-governmental-and-not-for-profit-accounting-7-e.pdf
    • http://www.gorillawalker.com/ultimate-study-guide-foundations-microsoft-project-2013.pdf
    • http://www.gorillawalker.com/guns-in-the-desert-general-jean-pierre-doguereau-s-journal.pdf
    • http://www.gorillawalker.com/asq-3-tm-actividades-de-aprendizaje.pdf
    • http://www.gorillaw
    • 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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