Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca1614c4bf456200…

MALICIOUS

PDF

44.4 KB Created: 2018-12-15 08:11:31 +03:00 Authoring application: AH XSL Formatter V6.1 MR1 for Linux64 : 6.1.6.12100 (via Antenna House PDF Output Library 6.1.420 (Linux64); modified using iText 2.1.7 by 1T3XT)
MD5: 7dc8d7655ddf598a19e941c3b8640557 SHA-1: eff28d5ace5f5714ecb1048cd820ed2470095ceb SHA-256: ca1614c4bf4562008fdbe25ac1f4481485bc31d736166664398a23c25090130a
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a machine learning classifier and contains a large number of external links, indicative of a link farm. The primary heuristic identified a mass external PDF link farm with 32 links, suggesting a potential SEO manipulation or content distribution scheme. While no scripts were extracted, the embedded URLs are the main indicators of malicious activity. The presence of numerous links to PDFs on the same domain suggests a coordinated effort to distribute content or redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8173

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/field-camp-hospital-and-prison-in-the-civil-war-1863.pdf
    • http://www.gorillawalker.com/dona-licha-s-island-modern-colonialism-in-puerto-rico.pdf
    • http://www.gorillawalker.com/talking-is-hard-for-me-encouraging-communication-in-children-with.pdf
    • http://www.gorillawalker.com/orchestral-repertoire-complete-parts-for-viola-from-the-classic-masterpieces.pdf
    • http://www.gorillawalker.com/measured-and-drawn-techniques-and-practice-for-the-metric-survey.pdf
    • http://www.gorillawalker.com/indesign-cs3-one-on-one.pdf
    • http://www.gorillawalker.com/child-development-a-thematic-approach.pdf
    • http://www.gorillawalker.com/extreme-sports-2009-square-wall-calendar.pdf
    • http://www.gorillawalker.com/customer-service-nraef-manage-first-competency-guide-edition-1.pdf
    • http://www.gorillawalker.com/the-maid-of-the-mist-solo-cornet-and-concert-band.pdf
    • http://www.gorillawalker.com/miris-dolobratus-linn-and-amblytylus-nasutus-kirschbaum-two-destructive-insect.pdf
    • http://www.gorillawalker.com/voici-la-france-french-edition.pdf
    • http://www.gorillawalker.com/gesteinskunde-ein-leitfaden-f-r-einsteiger-und-anwender-german-edition.pdf
    • http://www.gorillawalker.com/silo-nine-kindle-edition.pdf
    • http://www.gorillawalker.com/study-of-the-weights-of-kidneys-and-hearts-in-normal.pdf
    • http://www.gorillawalker.com/great-negroes-past-and-present-volume-one.pdf
    • http://www.gorillawalker.com/by-andrews-mcmeel-publishing-llc-cats-2015-mini-day-to.pdf
    • http://www.gorillawalker.com/caring-for-infants-and-toddlers-in-groups-developmentally-appropriate-practice.pdf
    • http://www.gorillawalker.com/fatal-terrain.pdf
    • http://www.gorillawalker.com/dreadful-droughts-awesome-forces-of-nature.pdf
    • http://www.gorillawalker.com/free-speech-101-the-utah-valley-uproar-over-michael-moore.pdf
    • http://www.gorillawalker.com/geometry-and-physics.pdf
    • http://www.gorillawalker.com/when-the-glitter-fades.pdf
    • http://www.gorillawalker.com/the-encyclopedia-of-aging-a-comprehensive-resource-in-gerontology-and.pdf
    • http://www.gorillawalker.com/cisco-ios-12-0-configuration-fundamentals-cisco-ios-reference-library.pdf
    • http://www.gorillawalker.com/modern-principles-of-macroeconomics-loose-leaf-budget-books.pdf
    • http://www.gorillawalker.com/quickbooks-complete-version-2015.pdf
    • http://www.gorillawalker.com/matchmaker-ssa.pdf
    • http://www.gorillawalker.com/sweet-the-sin.pdf
    • http://www.gorillawalker.com/gastric-cancer-principles-and-practice.pdf
    • http://www.gorillawalker.com/white-lotus-revolution.pdf
    • http://www.gorillawalker.com/mad-maria.pdf
    • http://www.gorillawalker.com/the-canyons-of-dinosaur-national-monument-a-river-runner-s.pdf
    • http://www.gorillawalker.com/how-to-get-funding-on-kickstarter-managing-an-effective-fundraising.pdf
    • http://www.gorillawalker.com/urban-street-terrorism-the-mexican-mafia-and-the-surenos.pdf
    • http://www.gorillawalker.com/the-inside-story-of-world-cup-soccer-sports-world.pdf
    • http://www.gorillawalker.com/sea-life-time-for-kids-nonfiction-readers-time-for-kids.pdf
    • http://www.gorillawalker.com/at-the-foot-of-the-cross-or-the-sorrows-of.pdf
    • http://www.gorillawalker.com/wet-and-wild.pdf
    • http://www.gorillawalker.com/pro-dns-and-bind-10.pdf
    • http://www.gorillawalker.com/orchestral-repertoire-complete-parts-for-viola-
    • 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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