Malicious PDF — malware analysis report

Static analysis result for SHA-256 fea1e301cba76d7c…

MALICIOUS

PDF

46.1 KB Created: 2018-11-30 20:09:19 +03:00 Authoring application: Adobe Acrobat 6.0 (via Adobe Acrobat 6.0 Paper Capture Plug-in)
MD5: ee9c710b1b60dafd88df7d19b9c0e728 SHA-1: 98f0aab19f4f03fd0a8e3c21d3f2706954f53276 SHA-256: fea1e301cba76d7c5766f3a9154c422a0fa80e8f160c400bb273e06f03c6cbbc
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged the document as malicious. The embedded URLs are likely used to manipulate search engine rankings or to distribute further malicious content, although no direct payload download was observed in this sample. The document body is heavily obfuscated and contains fragmented URL references.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8634

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/who-s-sully-now-boyz2gurlz-series.pdf
    • http://www.gorillawalker.com/die-entf-hrung-aus-dem-serail-k-384-aria-tenor.pdf
    • http://www.gorillawalker.com/the-legend-of-the-lady-slipper-ojibwe-tale.pdf
    • http://www.gorillawalker.com/the-ancient-mounds-of-poverty-point-place-of-rings-native.pdf
    • http://www.gorillawalker.com/high-level-synthesis-introduction-to-chip-and-system-design.pdf
    • http://www.gorillawalker.com/daytrips-london.pdf
    • http://www.gorillawalker.com/microwave-receivers-with-electronic-warfare-applications-corrected-reprint-edition.pdf
    • http://www.gorillawalker.com/official-the-simpsons-desk-block-2014-calendar.pdf
    • http://www.gorillawalker.com/six-months-to-live-turtleback-school-library-binding-edition-dawn.pdf
    • http://www.gorillawalker.com/the-life-changing-magic-of-tidying-up-by-marie-kondo.pdf
    • http://www.gorillawalker.com/on-what-the-constitution-means.pdf
    • http://www.gorillawalker.com/chamber-music-joh-seb-bach-s-kammermusik-vol-8-works.pdf
    • http://www.gorillawalker.com/los-titanes-de-david-spanish-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/2006-weight-watchers-complete-food-companion.pdf
    • http://www.gorillawalker.com/predique-por-un-a-o-predique-por-un-ano-preach.pdf
    • http://www.gorillawalker.com/the-problem-at-two-tithes-an-angela-marchmont-mystery-volume.pdf
    • http://www.gorillawalker.com/snarktastic-guide-to-college-success-the-plus-new-mystudentsuccesslab-update.pdf
    • http://www.gorillawalker.com/how-to-start-a-rock-band-your-step-by-step.pdf
    • http://www.gorillawalker.com/john-fielder-s-colorado-2007-scenic-calendar.pdf
    • http://www.gorillawalker.com/demanding-democracy-american-radicals-in-search-of-a-new-politics.pdf
    • http://www.gorillawalker.com/common-core-curriculum-english-grades-k-5-common-core-english.pdf
    • http://www.gorillawalker.com/the-unspoken-alliance-israel-s-secret-relationship-with-apartheid-south.pdf
    • http://www.gorillawalker.com/functional-renormalization-for-spontaneous-symmetry-breaking-an-investigation-of-antiferromagnetism.pdf
    • http://www.gorillawalker.com/hebrew-berlitz-phrase-book-dictionary-arabic-hebrew-edition.pdf
    • http://www.gorillawalker.com/black-american-writing-from-the-nadir-the-evolution-of-a.pdf
    • http://www.gorillawalker.com/children-s-encyclopaedia-of-questions-and-answers-bk-4.pdf
    • http://www.gorillawalker.com/alfa-romeo-alfetta-gtv6-1980-86-brooklands-books-road-tests.pdf
    • http://www.gorillawalker.com/first-they-killed-my-father-a-daughter-of-cambodia-remembers.pdf
    • http://www.gorillawalker.com/writings-on-china.pdf
    • http://www.gorillawalker.com/the-body-in-islamic-culture.pdf
    • http://www.gorillawalker.com/the-truth-about-everything-an-irreverent-history-of-philosophy-with.pdf
    • http://www.gorillawalker.com/the-first-time-parent-nspcc-child-care-guides.pdf
    • http://www.gorillawalker.com/nature-neighbors-embracing-birds-plants-animals-minerals-in-natural-colors.pdf
    • http://www.gorillawalker.com/wind-energy-systems-optimising-design-and-construction-for-safe-and.pdf
    • http://www.gorillawalker.com/a-people-s-history-of-the-new-boston.pdf
    • http://www.gorillawalker.com/captured-history.pdf
    • http://www.gorillawalker.com/surviving-a-disaster-evacuation-strategies-and-emergency-kits-for-staying.pdf
    • http://www.gorillawalker.com/electronic-devices-and-circuit-theory-11th-edition.pdf
    • http://www.gorillawalker.com/red-hot-troll-sex-lust-underground-book-1-kindle-edition.pdf
    • http://www.gorillawalker.com/an-invitation-to-cognitive-science-vol-2-visual-cognition-volume.pdf
    • http://www.gorillawalker.com/six-months-to-live-turtleback-school-library-binding-edition-
    • 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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