Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb6b4d820c0441ae…

MALICIOUS

PDF

46.5 KB Created: 2018-12-15 20:10:05 +03:00 Authoring application: Sejda (Ver. 1.0.0.M6-SNAPSHOT) (via iText 2.1.7 by 1T3XT)
MD5: 2d607b2abc2ff2d6b73a2aecf4ddf85a SHA-1: 5407aea8e4ea8b8039c52ed275a1e8cb268bbd2f SHA-256: cb6b4d820c0441aedbb4019a5df529306af8d5e062f4c1569886f5b23ffd8c95
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files, primarily hosted on www.gorillawalker.com. This technique is often used to distribute malicious content or to engage in SEO manipulation for phishing purposes. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8518

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/by-david-alderton-the-encyclopedia-of-animals-hardcover.pdf
    • http://www.gorillawalker.com/people-start-with-art-start-with-art-heinemann-paperback.pdf
    • http://www.gorillawalker.com/defcon-2-standing-on-the-brink-of-nuclear-war-during.pdf
    • http://www.gorillawalker.com/the-gis-management-handbook-concepts-practices-and-tools-for-planning.pdf
    • http://www.gorillawalker.com/cal-99-conversations-with-god-calendar-an-uncommon-dialogue.pdf
    • http://www.gorillawalker.com/the-bed-of-procrustes-philosophical-and-practical-aphorisms-unabridged-audible.pdf
    • http://www.gorillawalker.com/vegetarian-value-pack-2-201-vegetarian-recipes-one-pot-dutch.pdf
    • http://www.gorillawalker.com/renewing-innovation-systems-in-agriculture-and-food-how-to-go.pdf
    • http://www.gorillawalker.com/mobil-new-zealand-travel-guide-north-island.pdf
    • http://www.gorillawalker.com/wesley-snipes-baa-black-americans-of-achievement.pdf
    • http://www.gorillawalker.com/friends-of-liberty-thomas-jefferson-tadeusz-kosciuszko-and-agrippa-hull.pdf
    • http://www.gorillawalker.com/guide-to-operating-systems-enhanced-edition.pdf
    • http://www.gorillawalker.com/japanese-haiku-its-essential-nature-and-history-kindle-edition.pdf
    • http://www.gorillawalker.com/graph-theory-01-by-merris-russell-hardcover-2000.pdf
    • http://www.gorillawalker.com/novel-chemistry-and-processing-of-ceramics-matsci.pdf
    • http://www.gorillawalker.com/deception-x-ufos-and-aliens-from-beyond-or-beneath-kindle.pdf
    • http://www.gorillawalker.com/golf-club-design-fitting-alteration-1st-edition.pdf
    • http://www.gorillawalker.com/row-quilts-longitudes-latitudes.pdf
    • http://www.gorillawalker.com/materiality-politics-history-and-culture.pdf
    • http://www.gorillawalker.com/the-death-of-kings-a-medical-history-of-the-kings.pdf
    • http://www.gorillawalker.com/bat-masterson-the-newspaper-years-new-york-january-1921.pdf
    • http://www.gorillawalker.com/the-power-of-display-a-history-of-exhibition-installations-at.pdf
    • http://www.gorillawalker.com/gordian-knot-apartheid-and-the-unmaking-of-the-liberal-world.pdf
    • http://www.gorillawalker.com/gangsta-vol-6.pdf
    • http://www.gorillawalker.com/healthy-dinner-recipes-lose-weight-with-52-delicious-vegan-low.pdf
    • http://www.gorillawalker.com/teaching-students-who-are-exceptional-diverse-and-at-risk-in.pdf
    • http://www.gorillawalker.com/billy-joel-greatest-hits-volume-3-piano-vocal-guitar-artist.pdf
    • http://www.gorillawalker.com/gitlin-on-divorce-a-guide-to-illinois-matrimonial-law.pdf
    • http://www.gorillawalker.com/the-treatment-of-general-diseases-in-electro-homoeopathy.pdf
    • http://www.gorillawalker.com/is-tiny-dancer-really-elton-s-little-john-music-s.pdf
    • http://www.gorillawalker.com/hockey-romance-melting-the-ice-a-forbidden-hockey-romance-story.pdf
    • http://www.gorillawalker.com/debbie-mumm-angels-wall-calendar-2015.pdf
    • http://www.gorillawalker.com/church-versus-state-in-south-africa-the-case-of-the.pdf
    • http://www.gorillawalker.com/applied-bayesian-forecasting-and-time-series-analysis-chapman-hall-crc.pdf
    • http://www.gorillawalker.com/land-without-mirrors.pdf
    • http://www.gorillawalker.com/russkaia-lirika-xix-nachala-xx-veka-v-svete-istoricheskoi-poetiki.pdf
    • http://www.gorillawalker.com/better-spelling-age-9-11.pdf
    • http://www.gorillawalker.com/a-craving-vacancy-women-and-sexual-love-in-the-british.pdf
    • http://www.gorillawalker.com/the-lives-of-conn-smythe-from-the-battlefield-to-maple.pdf
    • http://www.gorillawalker.com/i-can-be-a-child-s-whimsical-introduction-to-yoga.pdf
    • http://www.gorillawalker.com/the-bed-of-
    • 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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