Malicious PDF — malware analysis report

Static analysis result for SHA-256 c81b28f1de87175d…

MALICIOUS

PDF

44.4 KB Created: 2018-12-15 08:53:26 +03:00 Authoring application: FrameMaker 9.0 (via Acrobat Distiller 9.3.2 (Windows))
MD5: e962e2995fbcdbf8312b4d68304118c1 SHA-1: a344b5bd6dc7d56a077f578dfd4fe280b916d614 SHA-256: c81b28f1de87175d4ddc72ebc06d2bbb33d05fc5d99f16d67bb42ebfded6f108
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a significant number of embedded URLs pointing to external PDF documents. This behavior is consistent with SEO poisoning or link farming techniques, where the goal is to artificially inflate the ranking of certain websites or pages. The document body itself is heavily obfuscated and does not provide clear textual content, but the presence of numerous links suggests a malicious intent to direct users to potentially harmful or misleading content.

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/endogenous-public-policy-and-contests.pdf
    • http://www.gorillawalker.com/grammar-100-reproducible-activities-photocopiable-blackline-masters-grades-5-6.pdf
    • http://www.gorillawalker.com/the-geology-of-ore-deposits.pdf
    • http://www.gorillawalker.com/draw-50-animals.pdf
    • http://www.gorillawalker.com/cooking-with-roy.pdf
    • http://www.gorillawalker.com/the-invention-of-enterprise-entrepreneurship-from-ancient-mesopotamia-to-modern.pdf
    • http://www.gorillawalker.com/reconstruction-opposing-viewpoints-in-american-history.pdf
    • http://www.gorillawalker.com/paleobiology-vol-9-no-4-fall-1983.pdf
    • http://www.gorillawalker.com/unbelievable-happiness-and-final-sorrow-the-hemingway-pfeiffer-marriage.pdf
    • http://www.gorillawalker.com/riding-passion.pdf
    • http://www.gorillawalker.com/student-advantage-guide-to-paying-for-college-1997-edition-annual.pdf
    • http://www.gorillawalker.com/tim-storrier-moments-in-response-to-memories-and-ideas-of.pdf
    • http://www.gorillawalker.com/thirty-years-of-world-bank-shelter-lending-what-have-we.pdf
    • http://www.gorillawalker.com/u-s-involvement-in-vietnam-essential-events-abdo.pdf
    • http://www.gorillawalker.com/the-healthcare-practitioner-s-handbook-of-management.pdf
    • http://www.gorillawalker.com/interventional-neuroradiology-medical-radiology.pdf
    • http://www.gorillawalker.com/1773-1895-kjhg-vormundschaftsrecht-german-edition.pdf
    • http://www.gorillawalker.com/eclectic-moments.pdf
    • http://www.gorillawalker.com/customs-broker-exams-with-answer-commentary-from-a-licensed-customs.pdf
    • http://www.gorillawalker.com/living-in-the-dragon-s-den-a-mountaineer-s-journey.pdf
    • http://www.gorillawalker.com/genesis-to-revelation-1-and-2-kings-1-and-2.pdf
    • http://www.gorillawalker.com/big-bubble-adventure-alphabats.pdf
    • http://www.gorillawalker.com/how-to-do-shakespeare.pdf
    • http://www.gorillawalker.com/regarding-the-fountain-paperback.pdf
    • http://www.gorillawalker.com/growing-object-oriented-software-guided-by-tests-addison-wesley-signature.pdf
    • http://www.gorillawalker.com/could-you-hurry-up-the-dawn-lord-poems-prayers-and.pdf
    • http://www.gorillawalker.com/development-of-a-construction-engineering-manpower-management-systems-final-report.pdf
    • http://www.gorillawalker.com/lacrosse-team-strategies-the-new-offense-defense-system.pdf
    • http://www.gorillawalker.com/the-sounds-of-falling-petals-few-eastern-poems-for-the.pdf
    • http://www.gorillawalker.com/the-dark-room-collective-and-post-soul-poetics-critical-essay.pdf
    • http://www.gorillawalker.com/la-reina-del-pacifico-es-la-hora-de-contar-spanish.pdf
    • http://www.gorillawalker.com/posh-loving-blossoms-2014-2015-monthly-pocket-planning-calendar.pdf
    • http://www.gorillawalker.com/i-ll-make-you-an-offer-you-can-t-refuse.pdf
    • http://www.gorillawalker.com/chopin-at-the-boundaries-sex-history-and-musical-genre-convergences.pdf
    • http://www.gorillawalker.com/equine-diagnostic-ultrasound-with-cd-rom-2e.pdf
    • http://www.gorillawalker.com/forever-young-vibrant-secrets-6-secrets-to-looking-feeling-10.pdf
    • http://www.gorillawalker.com/mathematical-interest-theory-student-manual.pdf
    • http://www.gorillawalker.com/clinical-cardiology-made-ridiculously-simple-edition-4-medmaster-ridiculously-simple.pdf
    • http://www.gorillawalker.com/utah-auto-law.pdf
    • http://www.gorillawalker.com/adrian-peterson-football-stars-up-close.pdf
    • http://www.gorillawalker.com/paleobiology-vol-9-no-4-fall-1983.pd
    • 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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