Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7480ccd0c082f38…

MALICIOUS

PDF

39.9 KB Created: 2019-02-13 20:37:10 +03:00 Authoring application: ESP Ghostscript 815.02
MD5: 0d9eb72f2d5cd6181bba03641f3cb25e SHA-1: 4892d402f21b3c3fbca958bcdeec504ea3dc1d3b SHA-256: f7480ccd0c082f3853a90e326247342d2f681dc8564126a317e85e23ac8af171
90 Risk Score

Malware Insights

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

The PDF heuristic 'PDF_SEO_LINK_FARM' indicates the presence of 32 external links, suggesting a link farm designed to distribute malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine the exact lure. The primary attack pattern involves leveraging these numerous links for redirection.

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/a-da-act-ii-scena-salvatore-della-patria-oboe-1.pdf
    • http://www.gorillawalker.com/the-chaos-balance-saga-of-recluce.pdf
    • http://www.gorillawalker.com/doce-a.pdf
    • http://www.gorillawalker.com/the-room-allen-and-allie-sex-adventures-part-2.pdf
    • http://www.gorillawalker.com/the-last-judgment-and-the-babylon-destroyed-so-that-all.pdf
    • http://www.gorillawalker.com/a-jungian-approach-to-literature.pdf
    • http://www.gorillawalker.com/practical-synthetic-organic-chemistry-reactions-principles-and-techniques.pdf
    • http://www.gorillawalker.com/essentials-of-payroll-management-and-accounting.pdf
    • http://www.gorillawalker.com/annotated-atlas-of-electrocardiography-a-guide-to-confident-interpretation-contemporary.pdf
    • http://www.gorillawalker.com/commedia-dell-arte-and-the-mediterranean-charting-journeys-and-mapping.pdf
    • http://www.gorillawalker.com/australian-industry-report-2014.pdf
    • http://www.gorillawalker.com/under-her.pdf
    • http://www.gorillawalker.com/a-cry-from-egypt-the-promised-land-volume-1.pdf
    • http://www.gorillawalker.com/linguaforum-toefl-ibt-insider-the-super-guide-includes-6-audio.pdf
    • http://www.gorillawalker.com/nie-daj-sie-zjesc-grzybom-candida-polish.pdf
    • http://www.gorillawalker.com/rich-dad-s-advisors-opm-how-to-attract-other-people.pdf
    • http://www.gorillawalker.com/total-i-ching-myths-for-change.pdf
    • http://www.gorillawalker.com/rural-sanitation-in-the-tropics-being-notes-and-observations-in.pdf
    • http://www.gorillawalker.com/analog-and-digital-communications-schaum-s-outlines.pdf
    • http://www.gorillawalker.com/eugenio-montale-the-fascist-storm-and-the-jewish-sunflower-toronto.pdf
    • http://www.gorillawalker.com/purity-of-heart-is-to-will-one-thing-spiritual-preparation.pdf
    • http://www.gorillawalker.com/shakespeare-s-landlord-lily-bard-mysteries-book-1.pdf
    • http://www.gorillawalker.com/100-videogames-screen-guides.pdf
    • http://www.gorillawalker.com/the-grace-kelly-years-princess-of-monaco.pdf
    • http://www.gorillawalker.com/marketing-violent-entertainment-to-children.pdf
    • http://www.gorillawalker.com/le-bon-usage-french-edition.pdf
    • http://www.gorillawalker.com/briefly.pdf
    • http://www.gorillawalker.com/a-bilingual-concordance-to-the-targum-of-the-prophets-ezekiel.pdf
    • http://www.gorillawalker.com/kaleidoscope-hearts-unabridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/bond-of-dreams-bond-of-love-vol-4.pdf
    • http://www.gorillawalker.com/textbook-of-soil-science.pdf
    • http://www.gorillawalker.com/earthquake-hazard-analysis.pdf
    • http://www.gorillawalker.com/100-best-plants-coastal-gar.pdf
    • http://www.gorillawalker.com/the-art-and-science-of-health-care-psychology-and-human.pdf
    • http://www.gorillawalker.com/women-and-girls-in-the-middle-ages-medieval-world-crabtree.pdf
    • http://www.gorillawalker.com/kopenhaga-new-polish-writing-english-and-polish-edition.pdf
    • http://www.gorillawalker.com/bioanalytical-chemistry-2nd-edition.pdf
    • http://www.gorillawalker.com/historical-linguistics-theory-and-method.pdf
    • http://www.gorillawalker.com/jurisprudence-or-the-theory-of-the-law.pdf
    • http://www.gorillawalker.com/tattoo-world.pdf
    • http://www.gorillawalker.com/the-last-judgment-and-the
    • 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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