Malicious PDF — malware analysis report

Static analysis result for SHA-256 77df891a7f4045a2…

MALICIOUS

PDF

42.3 KB Created: 2018-12-15 20:02:32 +03:00 Authoring application: - (via GPL Ghostscript 8.70)
MD5: f418015f488a8c70fe4b36b6c416944a SHA-1: 0e4003e923e7df1b8f9309c827bc28c33d9badfd SHA-256: 77df891a7f4045a2c6b7e7e4044cb4ff9ec6b1e3be26d67991a01b8f5472d6c3
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links pointing to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged the document as malicious. The primary attack pattern appears to be SEO manipulation or a link farm designed to drive traffic to a specific domain, potentially for distributing malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9181

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/catalysis-by-di-and-polynuclear-metal-cluster-complexes-the-chemistry.pdf
    • http://www.gorillawalker.com/early-puberty-is-linked-to-early-substance-use-child-adolescent.pdf
    • http://www.gorillawalker.com/by-j-l-krivine-introduction-to-axiomatic-set-theory.pdf
    • http://www.gorillawalker.com/best-handwriting-pupil-workbook-bk-4-practice-book-for-ages.pdf
    • http://www.gorillawalker.com/cataloging-the-world-paul-otlet-and-the-birth-of-the.pdf
    • http://www.gorillawalker.com/the-mind-games-men-play-with-women.pdf
    • http://www.gorillawalker.com/iso-13534-2000-petroleum-and-natural-gas-industries-drilling-and.pdf
    • http://www.gorillawalker.com/economics-of-sports-the-3rd-edition.pdf
    • http://www.gorillawalker.com/the-infection.pdf
    • http://www.gorillawalker.com/fundamentals-of-nonlinear-optics.pdf
    • http://www.gorillawalker.com/leed-reference-guide-for-green-building-design-and-construction-kindle.pdf
    • http://www.gorillawalker.com/a-chair-on-the-boulevard-paperback.pdf
    • http://www.gorillawalker.com/police-officer-exam-power-practice.pdf
    • http://www.gorillawalker.com/i-love-my-hope-nicole-s-erotic-romance-volume-2.pdf
    • http://www.gorillawalker.com/into-the-woods-libretto-vocal-book-the-broadway-junior-collection.pdf
    • http://www.gorillawalker.com/oca-ocp-oracle-database-12c-all-in-one-exam-guide.pdf
    • http://www.gorillawalker.com/the-taking.pdf
    • http://www.gorillawalker.com/iron-and-steel-class-race-and-community-in-birmingham-alabama.pdf
    • http://www.gorillawalker.com/the-tobin-tax-coping-with-financial-volatility.pdf
    • http://www.gorillawalker.com/las-ideas-pol-ticas-en-argentina-spanish-edition.pdf
    • http://www.gorillawalker.com/three-early-stories-illustrated.pdf
    • http://www.gorillawalker.com/notas-geogr-ficas-y-econ-micas-sobre-la-rep-blica.pdf
    • http://www.gorillawalker.com/mimesis-the-representation-of-reality-in-western-literature-princeton-classics.pdf
    • http://www.gorillawalker.com/quien-se-ha-llevado-mi-queso-who-moved-my-cheese.pdf
    • http://www.gorillawalker.com/desire-unwanted-five-reluctant-sex-explicit-erotica-stories.pdf
    • http://www.gorillawalker.com/what-s-wrong-with-your-life-insurance.pdf
    • http://www.gorillawalker.com/insight-guides-explore-nice-the-french-riviera-insight-explore-guides.pdf
    • http://www.gorillawalker.com/joy-of-sex-toys-daddy-s-girl-100-kindle-unlimited.pdf
    • http://www.gorillawalker.com/credit-union-directors-officers-insurance-handbook-kindle-edition.pdf
    • http://www.gorillawalker.com/write-publish-repeat-the-no-luck-required-guide-to-self.pdf
    • http://www.gorillawalker.com/overseas-p-c-growth-outpaces-u-s-gen-re-exec.pdf
    • http://www.gorillawalker.com/summary-indispensable-by-monday-larry-miller.pdf
    • http://www.gorillawalker.com/12-concertos-op-3-concerto-no-9-in-d-major.pdf
    • http://www.gorillawalker.com/smart-strategy.pdf
    • http://www.gorillawalker.com/warren-buffett-the-59-billion-philanthropist.pdf
    • http://www.gorillawalker.com/simulation-theory-a-psychological-and-philosophical-consideration-explorations-in-cognitive.pdf
    • http://www.gorillawalker.com/venice-italy-holiday-italy-holidays-venice-travel-tourism-the-illustrated.pdf
    • http://www.gorillawalker.com/modern-curriculum-for-gifted-and-advanced-academic-students.pdf
    • http://www.gorillawalker.com/pocket-posh-codewords-3-100-puzzles.pdf
    • http://www.gorillawalker.com/social-media-and-local-governments-theory-and-practice-public-administration.pdf
    • 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.