Malicious PDF — malware analysis report

Static analysis result for SHA-256 977aa22cfb6f6c65…

MALICIOUS

PDF

41.9 KB Created: 2019-03-17 11:06:44 +03:00 Authoring application: LaTeX with hyperref package (via pdfTeX-1.40.10)
MD5: 81578804ad4fc4f954fd880972a3ee85 SHA-1: 137f2387fb733526644e5851904758baebb29004 SHA-256: 977aa22cfb6f6c65e156617934c7994764f9296c8b06de6373dbc14a0f185aec
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a machine learning classifier and contains a significant number of embedded URLs, indicating a link farm designed to redirect users. The heuristic 'PDF_SEO_LINK_FARM' specifically calls out the mass external PDF link farm. While no scripts were extracted, the sheer volume of links suggests a malicious intent to lure users to potentially compromised or malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8872

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/molecular-thermodynamics-physical-chemistry-monograph-series.pdf
    • http://www.gorillawalker.com/official-guide-to-flea-market-prices-1st-edition.pdf
    • http://www.gorillawalker.com/web-development-design-foundations-with-xhtml-3rd-edition.pdf
    • http://www.gorillawalker.com/the-crucifixion-of-bobby-dangler-2-chapter-8.pdf
    • http://www.gorillawalker.com/le-petit-prince-french-language-edition.pdf
    • http://www.gorillawalker.com/the-hitler-youth-origins-and-development-1922-45.pdf
    • http://www.gorillawalker.com/lost-legacy-the-skull-chronicles.pdf
    • http://www.gorillawalker.com/the-globalization-of-supermax-prisons-critical-issues-in-crime-and.pdf
    • http://www.gorillawalker.com/vegan-barbecues-and-buffets.pdf
    • http://www.gorillawalker.com/cunningham-s-introductory-accounting-for-lawyers-american-casebook-series.pdf
    • http://www.gorillawalker.com/carta-atenag-rica-memoria-spanish-edition.pdf
    • http://www.gorillawalker.com/trisha-donnelly.pdf
    • http://www.gorillawalker.com/sometimes-life-just-doesn-t-seem-fair.pdf
    • http://www.gorillawalker.com/the-choir-member-s-companion.pdf
    • http://www.gorillawalker.com/any-given-monday-sports-injuries-and-how-to-prevent-them.pdf
    • http://www.gorillawalker.com/bosquejos-de-sermones-hombres-de-la-biblia-bosquejos-de-sermones.pdf
    • http://www.gorillawalker.com/blood-relations-animals-humans-and-politics.pdf
    • http://www.gorillawalker.com/jack-and-dave.pdf
    • http://www.gorillawalker.com/scattered-poems-city-lights-pocket-poets-series.pdf
    • http://www.gorillawalker.com/car-launch-the-human-side-of-managing-change-the-learning.pdf
    • http://www.gorillawalker.com/how-to-be-a-vampire-r-l-stine-s-ghosts.pdf
    • http://www.gorillawalker.com/theory-and-technique-of-ballroom-dancing.pdf
    • http://www.gorillawalker.com/pan-casero-homemade-bread-recetas-t-cnicas-y-trucos-para.pdf
    • http://www.gorillawalker.com/science-and-religion-some-historical-perspectives-canto-classics.pdf
    • http://www.gorillawalker.com/principles-of-project-management-collected-handbooks-from-the-project-management.pdf
    • http://www.gorillawalker.com/training-fundamentals-pfeiffer-essential-guides-to-training-basics.pdf
    • http://www.gorillawalker.com/cookie-magic-delicious-little-bites-to-bake-magic-baking-series.pdf
    • http://www.gorillawalker.com/rand-mcnally-highways-of-miami-fort-lauderdale-west-palm-beach.pdf
    • http://www.gorillawalker.com/remarks-on-the-dysentery-and-hepatitis-of-india.pdf
    • http://www.gorillawalker.com/delete-shifter-series-kindle-edition.pdf
    • http://www.gorillawalker.com/almas-sedientas-spanish-edition.pdf
    • http://www.gorillawalker.com/play-therapy-interventions-with-children-s-problems-case-studies-with.pdf
    • http://www.gorillawalker.com/bedside-snooker-signed-by-author.pdf
    • http://www.gorillawalker.com/prism-weight-loss-program-curriculum-four.pdf
    • http://www.gorillawalker.com/the-mystery-of-the-hot-air-balloon-the-boxcar-children.pdf
    • http://www.gorillawalker.com/electrochemistry-in-ionic-liquids-volume-1-fundamentals.pdf
    • http://www.gorillawalker.com/teen-health-course-2-activities-concept-mapping.pdf
    • http://www.gorillawalker.com/dirty-deeds-complete-series.pdf
    • http://www.gorillawalker.com/punk-knits-26-hot-new-designs-for-anarchistic-souls-and.pdf
    • http://www.gorillawalker.com/the-girl-in-the-mirror-a-novel-karen-and-michael.pdf
    • http://www.gorillawalker.com/le-petit
    • 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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