Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a4f981443b1f500…

MALICIOUS

PDF

36.2 KB Created: 2020-01-03 01:16:01 +03:00 Authoring application: TeX (via MiKTeX pdfTeX-1.10b)
MD5: 0e5eeccc5491f32fbdb412d50d14099c SHA-1: b03e2e1d57b0abc430e025c944562e521e7de662 SHA-256: 9a4f981443b1f500e397c124a357d3e9b4c46499c784133b8b84e7a027b7c7f7
90 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML_NYX_PDF_MALICIOUS classifier also flagged the document with high confidence. The embedded URLs are likely used to redirect users to malicious websites or to manipulate search engine rankings. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8218

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/historias-cortas-de-animales-maravillosos-lo-que-los-animales-nos.pdf
    • http://www.gorillawalker.com/southside-virginia-families-volume-ii.pdf
    • http://www.gorillawalker.com/principles-of-nuclear-chemistry.pdf
    • http://www.gorillawalker.com/accounting-for-acquisitions-and-mergers.pdf
    • http://www.gorillawalker.com/nuclear-deception-the-dangerous-relationship-between-the-united-states-and.pdf
    • http://www.gorillawalker.com/the-crimea-and-transcaucasia-being-the-narrative-of-a-journey.pdf
    • http://www.gorillawalker.com/wordsmith-a-guide-to-college-writing-5th-edition.pdf
    • http://www.gorillawalker.com/bach-barenreiter-urtext-bwv-244-klavierauszug-vocal-score-based-on.pdf
    • http://www.gorillawalker.com/hipnosis-clinica-clinical-hypnosis-un-enfoque-ericksoniano-an-ericksonian-approach.pdf
    • http://www.gorillawalker.com/curso-rapido-de-terminologia-medica-quick-medical-terminology-spanish-edition.pdf
    • http://www.gorillawalker.com/black-letter-outline-on-corporate-and-partnership-taxation.pdf
    • http://www.gorillawalker.com/as-romans-do-the-church-of-santa-susanna-in-rome.pdf
    • http://www.gorillawalker.com/footprint-thailand-5th-edition-footprint-thailand-handbook.pdf
    • http://www.gorillawalker.com/jason-mraz-guitar-play-along-volume-178.pdf
    • http://www.gorillawalker.com/digital-design-concepts-and-technical-guide-for-macromedia-studio-mx.pdf
    • http://www.gorillawalker.com/underground-clinical-vignettes-step-1-pathophysiology-iii-cv-dermatology-gu.pdf
    • http://www.gorillawalker.com/nests-and-strangers-on-asian-american-women-poets.pdf
    • http://www.gorillawalker.com/student-solutions-manual-chapters-10-15-for-tan-s-multivariable.pdf
    • http://www.gorillawalker.com/apple-training-series-ilife-08.pdf
    • http://www.gorillawalker.com/winning-the-salary-negotiation-learn-the-skills-to-earn-the.pdf
    • http://www.gorillawalker.com/pounded-on-the-plane-vol-2-2-story-bundle-collection.pdf
    • http://www.gorillawalker.com/endocrine-aspects-of-successful-aging-genes-hormones-and-lifestyles-research.pdf
    • http://www.gorillawalker.com/take-me-out-to-the-ball-game-sing-along-storybook.pdf
    • http://www.gorillawalker.com/encuentro-en-el-artico-the-arctic-incident-artemis-fowl-spanish.pdf
    • http://www.gorillawalker.com/fundamentals-of-integrated-circuit-technology.pdf
    • http://www.gorillawalker.com/molecular-driving-forces-statistical-thermodynamics-in-chemistry-biology-by-ken.pdf
    • http://www.gorillawalker.com/witnessness-beckett-dante-levi-and-the-foundations-of-responsibility.pdf
    • http://www.gorillawalker.com/ghost-hunter-odd-jobs.pdf
    • http://www.gorillawalker.com/computational-line-geometry.pdf
    • http://www.gorillawalker.com/australia-s-welfare-wars-revisited-the-players-the-politics-and.pdf
    • http://www.gorillawalker.com/declaration-for-trumpet-bulla.pdf
    • http://www.gorillawalker.com/in-bed-with-the-vampire-assassin-the-vampire-district-2.pdf
    • http://www.gorillawalker.com/simone-de-beauvoir-gender-and-testimony-cambridge-studies-in-french.pdf
    • http://www.gorillawalker.com/data-mining-cookbook-modeling-data-for-marketing-risk-and-customer.pdf
    • http://www.gorillawalker.com/snuggles-with-god-big-hugs-for-little-hearts.pdf
    • http://www.gorillawalker.com/sunspots-an-exploration-of-solar-energy-through-fact-and-fiction.pdf
    • http://www.gorillawalker.com/the-astaires-fred-adele.pdf
    • http://www.gorillawalker.com/the-best-winds.pdf
    • http://www.gorillawalker.com/travelling-to-infinity-my-life-with-stephen-kindle-edition.pdf
    • http://www.gorillawalker.com/my-teeming-brain-understanding-creative-writers.pdf
    • http://www.gorillawalker.com/curso-rapido-de-terminologia-medica-q
    • 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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