Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1870fab096f1f4f…

MALICIOUS

PDF

41.9 KB Created: 2018-12-14 20:23:34 +03:00 Authoring application: dvips(k) 5.99 Copyright 2010 Radical Eye Software (via Acrobat Distiller 9.4.5 (Windows))
MD5: 54bc3fd5b26c0e3ac4ae91f44744d80b SHA-1: 745ebba20aea9174476a1c2b083fe8c075bba434 SHA-256: e1870fab096f1f4f65e6257dd74baa75020e9f0be40d075894d4632da731b47c
90 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier and contains a large number of external links, indicating a link farm or SEO poisoning attempt. The document body is heavily obfuscated and does not provide clear textual content for analysis. The primary attack pattern involves directing users to numerous PDF files hosted on www.gorillawalker.com, likely as a distribution or redirection mechanism.

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/line-graphs-21st-century-basic-skills-library.pdf
    • http://www.gorillawalker.com/recipes-instructions-for-vita-mix-3600.pdf
    • http://www.gorillawalker.com/an-information-theoretic-approach-to-econometrics.pdf
    • http://www.gorillawalker.com/pathfinder-player-companion-people-of-the-stars-paperback.pdf
    • http://www.gorillawalker.com/sleigh-ride-for-piano-with-guitar-ukulele-chords-no-30149.pdf
    • http://www.gorillawalker.com/coach-chic-s-building-blocks-approach-to-skills-a-unique.pdf
    • http://www.gorillawalker.com/an-unauthorized-guide-to-jupiter-ascending-the-alien-action-film.pdf
    • http://www.gorillawalker.com/sources-of-industrial-leadership-studies-of-seven-industries.pdf
    • http://www.gorillawalker.com/serbo-croat-phrase-books-hugo.pdf
    • http://www.gorillawalker.com/brain-quest-grade-4-revised-4th-edition-1-500-questions.pdf
    • http://www.gorillawalker.com/essentials-of-telemedicine-and-telecare.pdf
    • http://www.gorillawalker.com/neurological-disorders-in-famous-artists-frontiers-of-neurology-and-neuroscience.pdf
    • http://www.gorillawalker.com/the-corporate-brand.pdf
    • http://www.gorillawalker.com/histopathology-a-color-atlas-and-textbook.pdf
    • http://www.gorillawalker.com/conflict-exclusion-and-dissent-in-the-linguistic-landscape-language-and.pdf
    • http://www.gorillawalker.com/the-passage-the-passage-trilogy-book-1-kindle-edition.pdf
    • http://www.gorillawalker.com/saratoga-turning-point-of-america-s-revolutionary-war.pdf
    • http://www.gorillawalker.com/50-haikus-volume-1-issue-6.pdf
    • http://www.gorillawalker.com/the-cup-of-the-world.pdf
    • http://www.gorillawalker.com/what-every-middle-school-teacher-should-know-third-edition.pdf
    • http://www.gorillawalker.com/the-island-of-dr-moral.pdf
    • http://www.gorillawalker.com/the-life-of-jesus-christ-kindle-edition.pdf
    • http://www.gorillawalker.com/eukee-the-jumpy-jumpy-elephant.pdf
    • http://www.gorillawalker.com/the-postman-always-purls-twice-a-black-sheep-knitting-mystery.pdf
    • http://www.gorillawalker.com/option-market-making-part-i-an-introduction-volcube-advanced-options.pdf
    • http://www.gorillawalker.com/annotated-guide-for-rn-s-to-the-texas-nursing-practice.pdf
    • http://www.gorillawalker.com/maverick-voices-conversations-with-political-and-cultural-rebels-logos-perspectives.pdf
    • http://www.gorillawalker.com/bolivia-in-focus-a-guide-to-the-people-politics-and.pdf
    • http://www.gorillawalker.com/the-bronze-killer-the-story-of-a-family-s-fight.pdf
    • http://www.gorillawalker.com/recetas-economicas-chef-express-en-espanol-spanish-edition.pdf
    • http://www.gorillawalker.com/the-seven-tablets-of-creation-or-the-babylonian-and-assyrian.pdf
    • http://www.gorillawalker.com/yellowfang-s-secret-warriors-super.pdf
    • http://www.gorillawalker.com/cellulose-solvents-for-analysis-shaping-and-chemical-modification-acs-symposium.pdf
    • http://www.gorillawalker.com/ecg-s-made-easy-study-cards.pdf
    • http://www.gorillawalker.com/taylor-swift-red.pdf
    • http://www.gorillawalker.com/a-more-beautiful-question-the-power-of-inquiry-to-spark.pdf
    • http://www.gorillawalker.com/rolling-into-action-memoirs-of-a-tank-corps-section-commander.pdf
    • http://www.gorillawalker.com/bieszczady-mapa-turystyczna-skala-1-75-000-tourist-map-polish.pdf
    • http://www.gorillawalker.com/all-politics-is-local-family-friends-and-provincial-interests-in.pdf
    • http://www.gorillawalker.com/redeemed-from-the-pit-biblical-repentance-and-restoration-from-the.pdf
    • http://www.gorillawalker.com/an-unauthorized-guide-to-jupiter-ascending-the-alie
    • 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/