Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b7a2afc24571821…

MALICIOUS

PDF

43.7 KB Created: 2018-12-08 04:18:08 +03:00 Authoring application: Acrobat Distiller 7.0.5 (Windows)
MD5: 4c55840262e9adf96ce0d411b8ae700e SHA-1: 308904a22d8d689359cd7381d73c5d71079b280a SHA-256: 5b7a2afc2457182135d4c1643da8bbf3b0f5a7c69b0ad84339bc9aed2d51650f
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links pointing to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier also flagged this PDF as malicious. The primary attack pattern observed is the distribution of numerous external links, likely intended to direct users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9016

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/intellectual-property-for-economic-development-kdi-series-in-economic-policy.pdf
    • http://www.gorillawalker.com/cyprus.pdf
    • http://www.gorillawalker.com/lincoln-s-resolute-unionist-hamilton-gamble-dred-scott-dissenter-and.pdf
    • http://www.gorillawalker.com/physical-examination-of-the-spine-and-extremities.pdf
    • http://www.gorillawalker.com/natural-experiments-of-history.pdf
    • http://www.gorillawalker.com/create.pdf
    • http://www.gorillawalker.com/interfacial-chemistry-of-rocks-and-soils-surfactant-science.pdf
    • http://www.gorillawalker.com/judo-unleashed-essential-throwing-grappling-techniques-for-intermediate-to-advanced.pdf
    • http://www.gorillawalker.com/gettysburg-battlefields-across-america.pdf
    • http://www.gorillawalker.com/oddiscy-s-expressions-of-sensual-truths.pdf
    • http://www.gorillawalker.com/definitions-of-common-words-and-phrases-in-the-king-james.pdf
    • http://www.gorillawalker.com/the-piano-works-of-serge-prokofiev.pdf
    • http://www.gorillawalker.com/yu-gi-oh-t-26.pdf
    • http://www.gorillawalker.com/a-day-in-a-girl-s-and-woman-s-life.pdf
    • http://www.gorillawalker.com/kieli-vol-2-novel-white-wake-on-the-sand-kieli.pdf
    • http://www.gorillawalker.com/guardians-of-gaea-tales-of-the-firewing.pdf
    • http://www.gorillawalker.com/human-factors-in-automotive-design-from-the-sae-2001-world.pdf
    • http://www.gorillawalker.com/siebzehn-und-vier-erotische-finger-bungen-german-edition.pdf
    • http://www.gorillawalker.com/the-olives-table-over-160-recipes-from-the-critically-acclaimed.pdf
    • http://www.gorillawalker.com/the-inner-planes-ad-d-planescape.pdf
    • http://www.gorillawalker.com/a-concise-approach-to-mathematical-analysis.pdf
    • http://www.gorillawalker.com/grace-of-god-the-will-of-man-the.pdf
    • http://www.gorillawalker.com/knowledge-a-very-short-introduction-very-short-introductions.pdf
    • http://www.gorillawalker.com/words-flower-from-one-to-another.pdf
    • http://www.gorillawalker.com/more-mbe-with-answers-the-most-frequently-tested-mbe-questions.pdf
    • http://www.gorillawalker.com/the-cooks-oracle-containing-recipes-for-plain-cookery-on-the.pdf
    • http://www.gorillawalker.com/the-rivers-colne-blackwater-and-roach-2005-y-charts.pdf
    • http://www.gorillawalker.com/vertical-seismic-profiling-techniques-applications-and-case-histories.pdf
    • http://www.gorillawalker.com/fuck-my-wife-anally-a-guilty-housewife-gangbang-adventure-3.pdf
    • http://www.gorillawalker.com/women-s-rights-in-the-united-states.pdf
    • http://www.gorillawalker.com/the-daemon-knows-literary-greatness-and-the-american-sublime.pdf
    • http://www.gorillawalker.com/a-donde-no-me-esperan-spanish-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/rassle.pdf
    • http://www.gorillawalker.com/a-is-for-alligator-the-alphabet-coloring-book-super-fun.pdf
    • http://www.gorillawalker.com/la-sabana-al-dedillo-spanish-edition.pdf
    • http://www.gorillawalker.com/nothing-but-praise-a-history-of-the-1321st-engineer-general.pdf
    • http://www.gorillawalker.com/searching-for-lulu-hannah-and-the-angels.pdf
    • http://www.gorillawalker.com/heavy-construction-third-edition-volume-2-drilling-and-blasting-tunnelling.pdf
    • http://www.gorillawalker.com/i-know-someone-with-hiv-aids-understanding-health-issues.pdf
    • http://www.gorillawalker.com/studyguide-for-physical-geology-the-science-of-earth-by-chip.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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