Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2ebad3fd088a943…

MALICIOUS

PDF

43.2 KB Created: 2019-03-30 22:24:47 +03:00 Authoring application: www.freepdfconvert.com (via http://www.freepdfconvert.com)
MD5: 994bfc3c9556438abc70654a774bd3e4 SHA-1: 9ea3d626715ade1212175fa6627b990e2702936b SHA-256: f2ebad3fd088a943caffe7e498508dbf9c4a06c1dab338a993ce5828acf87f33
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for containing a large number of external links, suggesting a link farm or SEO manipulation tactic. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the sheer volume of embedded URLs points towards a malicious intent, likely to direct users to harmful content or exploit search engine vulnerabilities. The document body was unreadable, preventing further analysis of its specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9171

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/the-tree-where-man-was-born-and-the-african-experience.pdf
    • http://www.gorillawalker.com/wardrobe-memories-art-and-fashion-in-japan.pdf
    • http://www.gorillawalker.com/chemistry-the-molecular-nature-of-matter-and-change-special-edition.pdf
    • http://www.gorillawalker.com/jordan-stake-history-of-stake-and-directory-of-stake-and.pdf
    • http://www.gorillawalker.com/the-flame-of-a-candle-bachelard-translation-series.pdf
    • http://www.gorillawalker.com/illustrated-flashcards-for-jones-comprehensive-medical-terminology.pdf
    • http://www.gorillawalker.com/most-expensive-wool.pdf
    • http://www.gorillawalker.com/curds-and-whey.pdf
    • http://www.gorillawalker.com/my-irish-table-recipes-from-the-homeland-and-restaurant-eve.pdf
    • http://www.gorillawalker.com/woodcutter-courier-king-a-medieval-tale-of-character.pdf
    • http://www.gorillawalker.com/liquids-juices-and-other-stuff.pdf
    • http://www.gorillawalker.com/your-erroneous-zones-abridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/her-bak-the-living-face-of-ancient-egypt.pdf
    • http://www.gorillawalker.com/the-subnormal-mind.pdf
    • http://www.gorillawalker.com/iso-9920-1995-ergonomics-of-the-thermal-environment-estimation-of.pdf
    • http://www.gorillawalker.com/sigmund-freud.pdf
    • http://www.gorillawalker.com/total-quality-management-tqm-in-higher-education.pdf
    • http://www.gorillawalker.com/fauquier-county-virginia-smb-adc.pdf
    • http://www.gorillawalker.com/alfred-s-basic-piano-prep-course-technic-book-level-c.pdf
    • http://www.gorillawalker.com/365-days-365-plays-06-by-parks-suzan-lori-paperback.pdf
    • http://www.gorillawalker.com/master-patterns-and-grading-for-women-s-outsizes.pdf
    • http://www.gorillawalker.com/zombie-smackdown-afmbe.pdf
    • http://www.gorillawalker.com/polar-regions-surviving-in-antarctica-x-treme-places.pdf
    • http://www.gorillawalker.com/spinning-around-spinning-dyeing-knitting-elizabeth-zimmermann-s-classics.pdf
    • http://www.gorillawalker.com/an-absence-of-competition-the-sustained-competitive-advantage-of-the.pdf
    • http://www.gorillawalker.com/computer-algebra-in-scientific-computing-16th-international-workshop-casc-2014.pdf
    • http://www.gorillawalker.com/the-highwayman-s-footsteps.pdf
    • http://www.gorillawalker.com/poverty-from-the-wealth-of-nations-integration-and-polarization-in.pdf
    • http://www.gorillawalker.com/the-birds-of-ecuador-2-vols.pdf
    • http://www.gorillawalker.com/blue-2-a-pop-up-book-for-children-of-all.pdf
    • http://www.gorillawalker.com/crm-in-real-time-empowering-customer-relationships.pdf
    • http://www.gorillawalker.com/pygmalion-candida-dark-lady-sonnets-pigmalion-kandida-smuglaya-ledi-sonetov.pdf
    • http://www.gorillawalker.com/educational-technology-specialist-national-teacher-examination-series-content-specialty-test.pdf
    • http://www.gorillawalker.com/living-in-the-shadow.pdf
    • http://www.gorillawalker.com/systemic-lupus-erythematosus-fourth-edition.pdf
    • http://www.gorillawalker.com/the-magic-skin.pdf
    • http://www.gorillawalker.com/letters-on-familiar-matters-rerum-familiarium-libri-vol-1-books.pdf
    • http://www.gorillawalker.com/beautiful-regret-part-three-an-alpha-billionaire-romance-vip-short.pdf
    • http://www.gorillawalker.com/the-new-shorter-oxford-english-dictionary-2-vol-set-thumb.pdf
    • http://www.gorillawalker.com/consumer-protection-law-handbook-paperback.pdf
    • http://www.gorillawalker.com/illustrated-flashca
    • 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://www.freepdfconvert.com
    • 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#
    +1 more URL(s)

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