Malicious PDF — malware analysis report

Static analysis result for SHA-256 e76b9d858b47aca0…

MALICIOUS

PDF

40.5 KB Created: 2018-12-02 20:18:13 +03:00 Authoring application: doPDF Ver 7.1 Build 349 (Windows XP Professional Edition (SP 3) - Version: 5.1.2600 (x86))
MD5: 9da6562a4eb63c7d3b1de1d4070e5bf1 SHA-1: 98461820886693ba695dac93e692e96a2e81b38b SHA-256: e76b9d858b47aca019022481f6f9469252a06d5951e15ddd257a9400cfe09979
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF was flagged by a critical heuristic for containing a large number of external links, suggesting a link farm or distribution mechanism. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the sheer volume of links to external PDFs points to a content-driven attack, likely for SEO manipulation or to serve as a landing page for further malicious activity.

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/the-invention-of-world-religions-or-how-european-universalism-was.pdf
    • http://www.gorillawalker.com/his-love-never-quits-finding-purpose-through-your-pain.pdf
    • http://www.gorillawalker.com/2002-nissan-maxima-owners-manual.pdf
    • http://www.gorillawalker.com/beneath-mulholland-thoughts-on-hollywood-and-its-ghosts.pdf
    • http://www.gorillawalker.com/tourism-heritage-and-national-culture-in-java-dilemmas-of-a.pdf
    • http://www.gorillawalker.com/herakles-and-the-mares-of-diomedes-the-legend-of-herakles.pdf
    • http://www.gorillawalker.com/reference-book-of-american-business-nebraska-third-quarter.pdf
    • http://www.gorillawalker.com/pluralism.pdf
    • http://www.gorillawalker.com/the-pillars-of-sand-echoes-of-empire.pdf
    • http://www.gorillawalker.com/nursing-the-neonate.pdf
    • http://www.gorillawalker.com/the-good-doctor-a-novel.pdf
    • http://www.gorillawalker.com/the-latin-riddle-book-aenigmatorum-liber-latinorum.pdf
    • http://www.gorillawalker.com/the-rise-of-writing-redefining-mass-literacy.pdf
    • http://www.gorillawalker.com/white-man-s-boo-three-stories-with-billionaires-bwwm-and.pdf
    • http://www.gorillawalker.com/menopause-overview-an-article-from-nwhrc-health-center-menopause-html.pdf
    • http://www.gorillawalker.com/midland-odessa-easyfinder-maps.pdf
    • http://www.gorillawalker.com/the-dog-lover-s-companion-to-new-york-city-the.pdf
    • http://www.gorillawalker.com/the-blizzard-issue-13.pdf
    • http://www.gorillawalker.com/essential-oils-for-depresion-essential-oil-remedies-for-stress-and.pdf
    • http://www.gorillawalker.com/sandwiched-by-succubi.pdf
    • http://www.gorillawalker.com/un-jour-je-te-mangerai-episode-14-mise-au-point.pdf
    • http://www.gorillawalker.com/understanding-homeland-security.pdf
    • http://www.gorillawalker.com/the-technology-management-handbook-electrical-engineering-handbook.pdf
    • http://www.gorillawalker.com/houghton-mifflin-social-studies-california-aud-bk-mp3-lvl-4.pdf
    • http://www.gorillawalker.com/molecular-virology-4th-edition-korean-edition.pdf
    • http://www.gorillawalker.com/arab-israeli-air-wars-1947-1982-osprey-combat-aircraft-23.pdf
    • http://www.gorillawalker.com/niagara-falls-rosen-real-readers-upper-emergent.pdf
    • http://www.gorillawalker.com/foot-acupuncture-therapy-paperback.pdf
    • http://www.gorillawalker.com/surveyin-da-situation-the-life-and-times-of-a-native.pdf
    • http://www.gorillawalker.com/tunes-for-a-small-harmonica.pdf
    • http://www.gorillawalker.com/open-wide-dr-mark-manhart-s-journey-in-dentistry-theatre.pdf
    • http://www.gorillawalker.com/the-new-york-times-super-sundays-150-big-sunday-crossword.pdf
    • http://www.gorillawalker.com/panama-kanal-land-und-leute-german-edition.pdf
    • http://www.gorillawalker.com/under-the-red-flag.pdf
    • http://www.gorillawalker.com/keys-for-writers-with-exercise-booklet-with-helpdesk-4th-ed.pdf
    • http://www.gorillawalker.com/operational-amplifiers-and-linear-integrated-circuits-second-edition.pdf
    • http://www.gorillawalker.com/the-supreme-court-in-the-federal-judicial-system.pdf
    • http://www.gorillawalker.com/feather-bound.pdf
    • http://www.gorillawalker.com/the-seven-deadly-sins-leader-s-guide-a-survival-guide.pdf
    • http://www.gorillawalker.com/mandolin-concerto-no-4-in-g-major.pdf
    • http://www.gorillawa
    • 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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