Malicious PDF — malware analysis report

Static analysis result for SHA-256 98a62db553101b99…

MALICIOUS

PDF

41.9 KB Created: 2019-01-06 08:09:04 +03:00 Authoring application: PSCRIPT.DRV Version 4.0 (via Acrobat Distiller 3.01 for Windows)
MD5: 39b2fa5a0dae1185e34cc7c20765dc01 SHA-1: 8ba70580384e6929ee6c761ff8205f8804a44bdb SHA-256: 98a62db553101b997164782e84242d344713678945b3063c6e4d22740104f42f
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML_NYX_PDF_MALICIOUS classifier also flagged the document. The primary purpose appears to be directing users to a large collection of documents hosted on www.gorillawalker.com, which is a common tactic for SEO manipulation or distributing malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8698

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/the-outline-bible.pdf
    • http://www.gorillawalker.com/single-molecule-magnets-and-related-phenomena-structure-and-bonding.pdf
    • http://www.gorillawalker.com/the-audiogram-workbook.pdf
    • http://www.gorillawalker.com/the-video-game-explosion-a-history-from-pong-to-playstation.pdf
    • http://www.gorillawalker.com/ideals-christmas-no-8.pdf
    • http://www.gorillawalker.com/fantastic-stories-present-the-lord-dunsany-super-pack.pdf
    • http://www.gorillawalker.com/philanthropy-and-the-construction-of-victorian-women-s-citizenship-lady.pdf
    • http://www.gorillawalker.com/aunt-marjory-fantasy.pdf
    • http://www.gorillawalker.com/the-john-zink-hamworthy-combustion-handbook-second-edition-volume-1.pdf
    • http://www.gorillawalker.com/game-girls.pdf
    • http://www.gorillawalker.com/alex-en-el-pais-de-los-numeros-alex-s-adventures.pdf
    • http://www.gorillawalker.com/dragon-ball-forever-1.pdf
    • http://www.gorillawalker.com/pharmacology-and-the-nursing-process-5e.pdf
    • http://www.gorillawalker.com/ferc-tariffs-contemporary-decisions-public-utility-series-kindle-edition.pdf
    • http://www.gorillawalker.com/basic-mathematics-for-college-students.pdf
    • http://www.gorillawalker.com/el-club-de-la-buena-estrella-the-joy-luck-club.pdf
    • http://www.gorillawalker.com/japan-at-a-glance-travel-impressions-a-study-in-japan.pdf
    • http://www.gorillawalker.com/frontier-highlander-vow-of-love-american-wilderness-series-romance-book.pdf
    • http://www.gorillawalker.com/family-guy-quagmire-2010-wall-calendar.pdf
    • http://www.gorillawalker.com/my-first-poem-berkshire-surrey.pdf
    • http://www.gorillawalker.com/management-laureates-a-collection-of-autobiographical-essays.pdf
    • http://www.gorillawalker.com/holt-mcdougal-larson-algebra-1-student-edition-2011.pdf
    • http://www.gorillawalker.com/scrabble-brd-8.pdf
    • http://www.gorillawalker.com/etica-ministerial-spanish-edition.pdf
    • http://www.gorillawalker.com/pen-and-ink-drawing-the-how-to-do-it-series.pdf
    • http://www.gorillawalker.com/around-the-research-of-vladimir-maz-ya-i-function-spaces.pdf
    • http://www.gorillawalker.com/the-child-taker-detective-alec-ramsay-series-book-1-unabridged.pdf
    • http://www.gorillawalker.com/the-mahabharata-volume-2.pdf
    • http://www.gorillawalker.com/the-pin-up-girls-of-yank-the-army-weekly-kindle.pdf
    • http://www.gorillawalker.com/under-the-eye-of-god-an-isaac-sidel-novel-the.pdf
    • http://www.gorillawalker.com/midnight-reflections-in-my-eyes-volume-1.pdf
    • http://www.gorillawalker.com/a-complete-guide-to-portals-and-user-experience-platforms.pdf
    • http://www.gorillawalker.com/women-s-suffrage-a-history-just-for-kids.pdf
    • http://www.gorillawalker.com/the-geography-of-urban-transportation-second-edition.pdf
    • http://www.gorillawalker.com/life-in-egypt-under-roman-rule-classics-in-papyrology.pdf
    • http://www.gorillawalker.com/toyota-s-8-steps-to-problem-solving.pdf
    • http://www.gorillawalker.com/the-time-machine-an-invention-a-critical-text-of-the.pdf
    • http://www.gorillawalker.com/guide-to-bordeaux-kindle-edition.pdf
    • http://www.gorillawalker.com/michelin-europe-map-705-maps-country-michelin.pdf
    • http://www.gorillawalker.com/zhang-huan-49-days.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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