Malicious PDF — malware analysis report

Static analysis result for SHA-256 77b49256d154cc7e…

MALICIOUS

PDF

43.0 KB Created: 2019-03-18 08:34:45 +03:00 Authoring application: - (via htmldoc 1.8.27 Copyright 1997-2006 Easy Software Products, All Rights Reserved.)
MD5: 0b5f94b5ede85fa6a35c13dc4917251b SHA-1: c51b4b6d3de40674ea1741d8621f5560fdd21143 SHA-256: 77b49256d154cc7ed32761516d9a29bd310a8d5d6b2307fe20c6e609fca68c92
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, identified by the PDF_SEO_LINK_FARM heuristic. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the link farm suggest an attempt to manipulate search engine results or distribute potentially malicious content. The ML classifier also flagged the document as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9027

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/scripta-quae-manserunt-omnia-fasc-44-tusculanae-disputationes-bibliotheca-scriptorum.pdf
    • http://www.gorillawalker.com/petrography-an-introduction-to-the-study-of-rocks-in-thin.pdf
    • http://www.gorillawalker.com/university-of-louisville-basketball-vault.pdf
    • http://www.gorillawalker.com/the-great-composer-as-teacher-and-student-theory-and-practice.pdf
    • http://www.gorillawalker.com/scandal-and-surrender-the-billionaire-s-temptation-series-book-8.pdf
    • http://www.gorillawalker.com/dk-eyewitness-books-da-vinci-and-his-times.pdf
    • http://www.gorillawalker.com/all-s-well-that-ends-well1603-an-entry-from-gale.pdf
    • http://www.gorillawalker.com/2011-coach-of-the-year-clinics-football-manual-kindle-edition.pdf
    • http://www.gorillawalker.com/discover-the-magic-pilanesburg.pdf
    • http://www.gorillawalker.com/princess-nina.pdf
    • http://www.gorillawalker.com/clep-humanities-exam-flashcard-study-system-clep-test-practice-questions.pdf
    • http://www.gorillawalker.com/a-visual-inventory.pdf
    • http://www.gorillawalker.com/you-can-run-pain-free.pdf
    • http://www.gorillawalker.com/capital-offense-how-washington-s-wise-men-turned-america-s.pdf
    • http://www.gorillawalker.com/island-of-the-cavemen-broodmaiden-for-the-behemoth-huge-size.pdf
    • http://www.gorillawalker.com/castles-pyramids-and-palaces-beginner-s-knowledge-series.pdf
    • http://www.gorillawalker.com/keyboard-music-of-black-composers-a-bibliography-music-reference-collection.pdf
    • http://www.gorillawalker.com/bang-poland-how-to-make-love-with-polish-girls-in.pdf
    • http://www.gorillawalker.com/means-illustrated-construction-dictionary-condensed-version-rsmeans.pdf
    • http://www.gorillawalker.com/alfred-suzuki-violin-school-cd-volume-6-revised.pdf
    • http://www.gorillawalker.com/pure-dessert-true-flavors-inspiring-ingredients-and-simple-recipes.pdf
    • http://www.gorillawalker.com/mega-structures-the-longest-bridges.pdf
    • http://www.gorillawalker.com/maithili-lokokti-kosh.pdf
    • http://www.gorillawalker.com/foreclosure-defense-a-practical-litigation-guide.pdf
    • http://www.gorillawalker.com/journal-d-un-exile-politique-aux-terres-australes.pdf
    • http://www.gorillawalker.com/summaries-and-titles-of-papers-published-from-the-institute-of.pdf
    • http://www.gorillawalker.com/teaching-with-favorite-mem-fox-books-engaging-skill-building-activities.pdf
    • http://www.gorillawalker.com/the-firefly-italian-english-visual-dictionary.pdf
    • http://www.gorillawalker.com/the-ninnies-coloring-book-for-haters.pdf
    • http://www.gorillawalker.com/the-winner-stands-alone-a-novel-p-s.pdf
    • http://www.gorillawalker.com/a-first-thesaurus-words-for-writing.pdf
    • http://www.gorillawalker.com/bull-by-the-horns-fighting-to-save-main-street-from.pdf
    • http://www.gorillawalker.com/co-dependence-healing-the-human-condition.pdf
    • http://www.gorillawalker.com/ultimate-secret-to-getting-absolutely-everything-you-want-the.pdf
    • http://www.gorillawalker.com/noah-s-choice-the-future-of-endangered-species-1995-302.pdf
    • http://www.gorillawalker.com/beyond-birkie-fever.pdf
    • http://www.gorillawalker.com/lullaby-folio-junior-series-no-448.pdf
    • http://www.gorillawalker.com/bite-me-there-lesbian-erotica.pdf
    • http://www.gorillawalker.com/red-conspirator-j-peters-and-the-american-communist-underground.pdf
    • http://www.gorillawalker.com/drafting-engineering-contracts.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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