Malicious PDF — malware analysis report

Static analysis result for SHA-256 86f1b4f55073dbf4…

MALICIOUS

PDF

40.4 KB Created: 2018-11-30 20:26:11 +03:00 Authoring application: PScript5.dll Version 5.2 (via Acrobat Distiller 8.0.0 (Windows))
MD5: 6479b6073ca5a6792d44a20b2988005a SHA-1: 67fcfc2d6ab4548260cb5c4176b7f1205035de91 SHA-256: 86f1b4f55073dbf43ece81e1bc96c38419e1cafd33ed83c8697b458d96e4d846
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious. The embedded links likely serve to direct users to malicious websites or for SEO spamming purposes. No scripts were extracted from this sample.

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/harajuku-style-fun-fashions-you-can-sketch-drawing-fun-fashions.pdf
    • http://www.gorillawalker.com/get-that-interview-create-a-cv-and-cover-letter-that.pdf
    • http://www.gorillawalker.com/the-skeleton-in-your-grandfather-s-cupboard.pdf
    • http://www.gorillawalker.com/sonata-quasi-una-fantasia-piano-sheet-music-folio-edition-peters.pdf
    • http://www.gorillawalker.com/applications-of-solar-energy-for-heating-and-cooling-of-buildings.pdf
    • http://www.gorillawalker.com/win-at-scrabble-kindle-edition.pdf
    • http://www.gorillawalker.com/unplanned-the-dramatic-true-story-of-a-former-planned-parenthood.pdf
    • http://www.gorillawalker.com/new-herb-bible-growing-and-knowing-your-herbs-and-how.pdf
    • http://www.gorillawalker.com/pasta-and-co-by-request.pdf
    • http://www.gorillawalker.com/pranic-healing-using-breathing-with-healing-mantras.pdf
    • http://www.gorillawalker.com/the-serpent-kindle-edition.pdf
    • http://www.gorillawalker.com/blanco-omega-2-0-el-poder-de-los-fragmentos-volume.pdf
    • http://www.gorillawalker.com/when-blood-calls-a-shadow-keepers-novel.pdf
    • http://www.gorillawalker.com/tapestries-of-hope-threads-of-love-the-arpillera-movement-in.pdf
    • http://www.gorillawalker.com/kids-like-sight-word-readers.pdf
    • http://www.gorillawalker.com/betty-crocker-living-with-cancer-cookbook-1st-first-edition-by.pdf
    • http://www.gorillawalker.com/the-formation-of-american-local-governments-private-values-in-public.pdf
    • http://www.gorillawalker.com/asterix-36-der-papyrus-des-c-sar-german-edition.pdf
    • http://www.gorillawalker.com/the-films-of-kristen-bjorn.pdf
    • http://www.gorillawalker.com/dynamic-analysis-and-design-of-offshore-structures-ocean-engineering-oceanography.pdf
    • http://www.gorillawalker.com/the-bad-girl-and-the-good-boy.pdf
    • http://www.gorillawalker.com/the-quest-for-the-pro-tour.pdf
    • http://www.gorillawalker.com/the-northern-danelaw-its-social-structure-c-800-1100-studies.pdf
    • http://www.gorillawalker.com/faur-dolly-suite-for-one-piano-four-hands-alfred-masterwork.pdf
    • http://www.gorillawalker.com/medieval-tyrant-mystery-of-the-allfathers-medieval-future-book-2.pdf
    • http://www.gorillawalker.com/varieties-of-personal-theology-charting-the-beliefs-and-values-of.pdf
    • http://www.gorillawalker.com/british-social-attitudes-the-24th-report-british-social-attitudes-survey.pdf
    • http://www.gorillawalker.com/mel-bay-solo-pieces-for-the-beginning-flutist.pdf
    • http://www.gorillawalker.com/basic-chiropractic-paraprofessional-manual.pdf
    • http://www.gorillawalker.com/religious-nationalism-hindus-and-muslims-in-india.pdf
    • http://www.gorillawalker.com/acute-stroke-nursing.pdf
    • http://www.gorillawalker.com/reaver-demonica.pdf
    • http://www.gorillawalker.com/surfing-s-greatest-misadventures.pdf
    • http://www.gorillawalker.com/americana-hawaiiana-travel-exploration-cartography-sale-396-january-29-2009.pdf
    • http://www.gorillawalker.com/the-listener-s-kjv-mp3-audio-bible.pdf
    • http://www.gorillawalker.com/the-jewish-sources-of-the-sermon-on-the-mount.pdf
    • http://www.gorillawalker.com/cisco-unity-connection-networking-technology-ip-communications.pdf
    • http://www.gorillawalker.com/the-woman-who-heard-color.pdf
    • http://www.gorillawalker.com/royal-offers-int-l-business-protection-coverage-royal-group-inc.pdf
    • http://www.gorillawalker.com/national-geographic-january-june-1969-volume-135.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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