Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9ec7d5a700bf2f7…

MALICIOUS

PDF

42.3 KB Created: 2018-12-07 18:29:02 +03:00 Authoring application: Windows PSCRIPT (via Acrobat Distiller 3.01 for Windows)
MD5: f231d2877a098a0bf20d17380ad2a711 SHA-1: 29ac878e134a5074b8709890d91b6ba6379d767c SHA-256: b9ec7d5a700bf2f775e31acdfb74edecfff641423a8a269e4cba3f0f1d2c06ae
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 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 this PDF as malicious. The primary attack pattern appears to be SEO manipulation or a link farm designed to direct users to potentially malicious content hosted on www.gorillawalker.com.

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/romanze-for-viola-and-orchestra-op-85-orchestra-score-parts.pdf
    • http://www.gorillawalker.com/gurps-deadlands-weird-west.pdf
    • http://www.gorillawalker.com/four-english-folksongs-for-saxophone-quartet-by-ralph-vaughan-williams.pdf
    • http://www.gorillawalker.com/the-kite-of-stars-and-other-stories-kindle-edition.pdf
    • http://www.gorillawalker.com/bare-bones.pdf
    • http://www.gorillawalker.com/smart-object-pipeline-revolutionary-tactics-for-the-photoshop-layer-workflow.pdf
    • http://www.gorillawalker.com/laura-va-a-la-compra-spanish-edition.pdf
    • http://www.gorillawalker.com/follow-me-ii-more-on-the-human-element-in-leadership.pdf
    • http://www.gorillawalker.com/modernism-a-very-short-introduction.pdf
    • http://www.gorillawalker.com/solitons-an-introduction-cambridge-texts-in-applied-mathematics.pdf
    • http://www.gorillawalker.com/memphis-barbecue-a-succulent-history-of-smoke-sauce-soul-american.pdf
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    • http://www.gorillawalker.com/spirit-leadership-how-the-experience-of-the-spirit-fashions-leaders.pdf
    • http://www.gorillawalker.com/albert-moves-in-activity-board-books.pdf
    • http://www.gorillawalker.com/lincoln-cents-1965-2015-collector-s-lincoln-cents-folder.pdf
    • http://www.gorillawalker.com/lifeskills-for-adult-children-kindle-edition.pdf
    • http://www.gorillawalker.com/lullabies.pdf
    • http://www.gorillawalker.com/padraig-o-fiannachta.pdf
    • http://www.gorillawalker.com/man-up-becoming-a-godly-man-in-an-ungodly-world.pdf
    • http://www.gorillawalker.com/find-a-job-super-fast.pdf
    • http://www.gorillawalker.com/hidden-from-history-reclaiming-the-gay-lesbian-past-the-ancient.pdf
    • http://www.gorillawalker.com/what-if-jeremy-shuttle-adventures-book-one.pdf
    • http://www.gorillawalker.com/destiny-and-the-wild-horses-pony-club-secrets-book-3.pdf
    • http://www.gorillawalker.com/god-smiles-when.pdf
    • http://www.gorillawalker.com/wild-horses-the-world-s-last-surviving-herds.pdf
    • http://www.gorillawalker.com/the-dream-power-goal-system-five-simple-steps-to-achieve.pdf
    • http://www.gorillawalker.com/house-of-ravens-nightfall-chronicles.pdf
    • http://www.gorillawalker.com/earth-radiation.pdf
    • http://www.gorillawalker.com/businesstourismus-fur-mallorca-german-edition.pdf
    • http://www.gorillawalker.com/eating-smoke-fire-in-urban-america-1800-1950.pdf
    • http://www.gorillawalker.com/bedroom-experimentation-mm-gay-first-time-erotic-romance-kindle-edition.pdf
    • http://www.gorillawalker.com/game-of-thrones-prima-official-game-guide-prima-official-game.pdf
    • http://www.gorillawalker.com/a-bad-case-of-the-giggles-kids-pick-the-funniest.pdf
    • http://www.gorillawalker.com/all-gall-is-divided-aphorisms.pdf
    • http://www.gorillawalker.com/5th-edition-pmp-pmbok-practice-exam-w-solutions-project-communications.pdf
    • http://www.gorillawalker.com/explorer-s-guide-hudson-valley-catskill-mountains-includes-saratoga-springs.pdf
    • http://www.gorillawalker.com/energising-leadership.pdf
    • http://www.gorillawalker.com/flip-flap-fly-a-book-for-babies-everywhere.pdf
    • http://www.gorillawalker.com/taming-the-yellow-river-silt-and-floods-proceedings-of-a.pdf
    • http://www.gorillawalker.com/100-most-important-science-ideas-key-concepts-in-genetics-physics.pdf
    • http://www.gorillawalker.com/smart-object-pipeline-revolutionary-tac
    • 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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