Malicious PDF — malware analysis report

Static analysis result for SHA-256 98f223361d059197…

MALICIOUS

PDF

41.7 KB Created: 2019-04-03 18:27:36 +03:00 Authoring application: - (via Acrobat Distiller 4.05 for Windows)
MD5: a5f7bd3ffd550695c71dbbb21d057b02 SHA-1: dd5f00605f162e0ca7040c26c5e0bcb6946450c1 SHA-256: 98f223361d059197830e8e04f2ee701ebb23569d7114fc51aa165ebbdf67eaba
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this file as malicious. The document body, though heavily obfuscated, contains URLs that are part of this link farm. The primary attack pattern appears to be SEO manipulation or a distribution point for other malicious content via these numerous links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9027

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/asset-protection-for-real-estate-investors.pdf
    • http://www.gorillawalker.com/a-brief-history-of-the-dynasties-of-china.pdf
    • http://www.gorillawalker.com/all-about-the-seasons.pdf
    • http://www.gorillawalker.com/how-to-start-a-sentence-words-to-begin-sentences-english.pdf
    • http://www.gorillawalker.com/tian-zhu.pdf
    • http://www.gorillawalker.com/baa-moo-i-love-you-a-book-of-animal-sounds.pdf
    • http://www.gorillawalker.com/making-the-choice-when-typical-school-doesn-t-fit-your.pdf
    • http://www.gorillawalker.com/the-digital-evolution-photography-in-the-electronic-age.pdf
    • http://www.gorillawalker.com/trio-tapestry-viola.pdf
    • http://www.gorillawalker.com/generative-design-visualize-program-and-create-with-processing.pdf
    • http://www.gorillawalker.com/catalog-208-american-cartography.pdf
    • http://www.gorillawalker.com/wild-cats-of-the-world-of-the-world-series.pdf
    • http://www.gorillawalker.com/kizil-on-the-silk-road-crossroads-of-commerce-and-meeting.pdf
    • http://www.gorillawalker.com/linux-for-the-oracle-dba-the-definitive-reference-oracle-in.pdf
    • http://www.gorillawalker.com/trek-fail-kindle-edition.pdf
    • http://www.gorillawalker.com/organizational-behavior-key-concepts-skills-best-practices.pdf
    • http://www.gorillawalker.com/insect-diets-science-and-technology.pdf
    • http://www.gorillawalker.com/asking-god-your-hardest-questions.pdf
    • http://www.gorillawalker.com/spot-s-first-words.pdf
    • http://www.gorillawalker.com/essentials-of-physical-geology.pdf
    • http://www.gorillawalker.com/scherzo-in-d-minor-full-score-a6782.pdf
    • http://www.gorillawalker.com/diving-and-snorkeling-monterey-peninsula-and-northern-california-lonely-planet.pdf
    • http://www.gorillawalker.com/secrets-of-the-magdalene-scrolls.pdf
    • http://www.gorillawalker.com/the-word-of-the-lord-to-ebed-melech-the-ethiopian.pdf
    • http://www.gorillawalker.com/how-to-cook-vegetables-prepare-salads-and-make-sandwiches-without.pdf
    • http://www.gorillawalker.com/devil-s-playground-mcgurney-chronicles.pdf
    • http://www.gorillawalker.com/arc-routing-theory-solutions-and-applications.pdf
    • http://www.gorillawalker.com/two-hamlets-in-nam-bo-memoirs-of-life-in-vietnam.pdf
    • http://www.gorillawalker.com/evaporation-of-water-with-emphasis-on-applications-and-measurements.pdf
    • http://www.gorillawalker.com/skull-the-slayer.pdf
    • http://www.gorillawalker.com/energy-management-in-plastics-processing-strategies-targets-techniques-and-tools.pdf
    • http://www.gorillawalker.com/denis-leary-s-merry-f-in-christmas.pdf
    • http://www.gorillawalker.com/fate-of-america-an-inquiry-into-national-character.pdf
    • http://www.gorillawalker.com/shostakovich-dmitri-sonata-unfinished-for-violin-and-piano.pdf
    • http://www.gorillawalker.com/beneath-the-patchwork-moon-a-hope-springs-novel.pdf
    • http://www.gorillawalker.com/zhongguo-xian-dai-wen-xue-shi-1917-1997-textbook-series.pdf
    • http://www.gorillawalker.com/avancemos-tennessee-student-workbook-package-level-2.pdf
    • http://www.gorillawalker.com/building-strategic-relationships-a-practical-guide-to-partnering-with-non.pdf
    • http://www.gorillawalker.com/german-practice-tests.pdf
    • http://www.gorillawalker.com/religion-in-america-since-1945-a-history-columbia-histories-of.pdf
    • http://www.gorillawalker.com/generative-design-visualize-program-and-create-with-proc
    • 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/

Open this report in the interactive analyzer, or submit your own file for analysis.