Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a13c177d66959e6…

MALICIOUS

PDF

32.3 KB Created: 2020-02-19 11:22:37 +03:00 Authoring application: TeX (via pdfTeX-1.40.17)
MD5: 9d6f3d8ea3b3b4dfd3a177f438852e64 SHA-1: e2ee3ec91d5a7678210a40dac5f7a6ac59ff9769 SHA-256: 7a13c177d66959e6af06cb0808ff893924f3054532b204c4d788c0b942a4c436
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to distribute additional malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific intent beyond the link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8529

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/ms-lupus-and-me-and-that-s-not-all.pdf
    • http://www.gorillawalker.com/supporting-children-in-their-home-school-and-community.pdf
    • http://www.gorillawalker.com/big-cat-all-change-board-books.pdf
    • http://www.gorillawalker.com/orienting-the-self-studies-in-german-literature-linguistics-and-culture.pdf
    • http://www.gorillawalker.com/atkins-diet-effective-strategies-to-lose-weight-on-the-atkins.pdf
    • http://www.gorillawalker.com/cautivante-revelemos-el-misterio-del-alma-de-una-mujer-captivating.pdf
    • http://www.gorillawalker.com/rob-roy-oxford-world-s-classics.pdf
    • http://www.gorillawalker.com/sturmgeschutz-its-variants-spielberger-german-armor-military-vehicles-series-vol.pdf
    • http://www.gorillawalker.com/mindjacker.pdf
    • http://www.gorillawalker.com/thug-a-licious.pdf
    • http://www.gorillawalker.com/zac-efron-superstars.pdf
    • http://www.gorillawalker.com/stock-market-forecasting-the-mcwhirter-method-de-mystified.pdf
    • http://www.gorillawalker.com/the-rise-of-the-south-aftrican-reich.pdf
    • http://www.gorillawalker.com/a-woman-s-wartime-journal-an-account-of-sherman-s.pdf
    • http://www.gorillawalker.com/ravaged-by-bigfoot-monster-erotica.pdf
    • http://www.gorillawalker.com/tissue-culture-techniques-for-horticultural-crops.pdf
    • http://www.gorillawalker.com/manhattan-gmat-verbal-strategy-guide-set-4th-edition-manhattan-gmat.pdf
    • http://www.gorillawalker.com/hunger-a-gone-novel-kindle-edition.pdf
    • http://www.gorillawalker.com/efficacy-of-assistive-technology-interventions-advances-in-special-education-technology.pdf
    • http://www.gorillawalker.com/the-new-cognitive-neurosciences-second-edition.pdf
    • http://www.gorillawalker.com/rogue-galaxy-the-official-strategy-guide.pdf
    • http://www.gorillawalker.com/cocina-esencial-de-m-xico-spanish-edition.pdf
    • http://www.gorillawalker.com/estimating-electrical-construction-revised.pdf
    • http://www.gorillawalker.com/dragons-don-t-cry-fire-chronicles-volume-1.pdf
    • http://www.gorillawalker.com/turn-up-the-heat-a-couples-guide-to-sexual-intimacy.pdf
    • http://www.gorillawalker.com/online-ase-technician-test-preparation-ttp-truck-series-slimline-keycode.pdf
    • http://www.gorillawalker.com/ceylon.pdf
    • http://www.gorillawalker.com/saxon-algebra-2-an-incremental-development-2nd-edition.pdf
    • http://www.gorillawalker.com/the-elite-guide-to-leadership.pdf
    • http://www.gorillawalker.com/ibm-s-360-and-early-370-systems-history-of-computing.pdf
    • http://www.gorillawalker.com/the-origins-of-federal-support-for-higher-education-george-w.pdf
    • http://www.gorillawalker.com/the-royal-tennis-court-a-history-of-tennis-at-hampton.pdf
    • http://www.gorillawalker.com/colossians-and-philemon-macarthur-new-testament-commentary-macarthur-new-testament.pdf
    • http://www.gorillawalker.com/tornado-watch-number-211.pdf
    • http://www.gorillawalker.com/ragged-edges-poems-from-the-margins.pdf
    • http://www.gorillawalker.com/mobile-applications-and-knowledge-advancements-in-e-business.pdf
    • http://www.gorillawalker.com/the-problem-of-space-vehicle-descent-in-planetary-atmospheres-nasa.pdf
    • http://www.gorillawalker.com/strengthening-of-concrete-structures-with-adhesive-bonded-reinforcement-design-and.pdf
    • http://www.gorillawalker.com/the-brickmaker-s-bride-refined-by-love.pdf
    • http://www.gorillawalker.com/a-history-of-the-canadian-peoples-4e.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/

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