Malicious PDF — malware analysis report

Static analysis result for SHA-256 811366ca1b3c5cd7…

MALICIOUS

PDF

34.2 KB Created: 2019-09-02 22:50:14 +03:00 Authoring application: tFPDF 1.03 First seen: 2020-12-25
MD5: b348c7cf80664b8d94210ed202063501 SHA-1: 407eb4cb9799703e3bbe1974ad70c2ebb1ef5097 SHA-256: 811366ca1b3c5cd7739d7bc59cf3fce9ba251c2c81bf9b52419e9892a80af930
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF documents hosted on the same domain. The ML classifier also flagged this PDF as malicious. The primary purpose appears to be SEO manipulation or distributing links to potentially malicious content, rather than direct user interaction within the document itself.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8313

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-new-german-law-of-obligations-historical-and-comparative-perspectives.pdf In PDF document text
    • http://www.gorillawalker.com/solos-for-young-cellists-cello-part-and-piano-acc-volume.pdfIn PDF document text
    • http://www.gorillawalker.com/ilts-test-of-academic-proficiency-400-secrets-study-guide-ilts.pdfIn PDF document text
    • http://www.gorillawalker.com/the-border-guide-living-working-and-investing-across-the-border.pdfIn PDF document text
    • http://www.gorillawalker.com/sister-sarah-s-pick-3-4-winning-tickets-hits-within.pdfIn PDF document text
    • http://www.gorillawalker.com/the-laughing-stalk-live-comedy-and-its-audiences-aesthetic-critical.pdfIn PDF document text
    • http://www.gorillawalker.com/lost-and-found.pdfIn PDF document text
    • http://www.gorillawalker.com/ipso-facto-a-scientific-exploration-of-the-old-and-new.pdfIn PDF document text
    • http://www.gorillawalker.com/looking-backward-2000-1887-broadview-literary-texts.pdfIn PDF document text
    • http://www.gorillawalker.com/crop-adaptation-to-climate-change.pdfIn PDF document text
    • http://www.gorillawalker.com/evidence-synthesis-for-decision-making-in-healthcare.pdfIn PDF document text
    • http://www.gorillawalker.com/the-background-of-the-gospels-or-judaism-in-the-period.pdfIn PDF document text
    • http://www.gorillawalker.com/elevator-music-a-surreal-history-of-muzak-easy-listening-and.pdfIn PDF document text
    • http://www.gorillawalker.com/almost-perfect-mystery-crime-romantic-thriller-conspiracies-legal-fiction-woman.pdfIn PDF document text
    • http://www.gorillawalker.com/the-hoodoodad.pdfIn PDF document text
    • http://www.gorillawalker.com/preces-and-responses-satb-vocal-score-church-music-society-publications.pdfIn PDF document text
    • http://www.gorillawalker.com/the-easter-triduum-entering-the-pascal-mystery.pdfIn PDF document text
    • http://www.gorillawalker.com/gorbachev-and-glasnost-viewpoints-from-the-soviet-press.pdfIn PDF document text
    • http://www.gorillawalker.com/essential-mathematics-for-economic-analysis-with-mymathlab-global-access-card.pdfIn PDF document text
    • http://www.gorillawalker.com/25th-anniversary-hazelwood-case-still-suffocating-student-journalists-media-law.pdfIn PDF document text
    • http://www.gorillawalker.com/bow-the-dog.pdfIn PDF document text
    • http://www.gorillawalker.com/independent-filmmaking-revised-edition-paperback.pdfIn PDF document text
    • http://www.gorillawalker.com/il-paese-del-carnevale-italian-edition.pdfIn PDF document text
    • http://www.gorillawalker.com/business-model-analysis-accounting-finance-and-strategy-for-management-decisions.pdfIn PDF document text
    • http://www.gorillawalker.com/plum-boxed-set-1-books-1-3-one-for-the.pdfIn PDF document text
    • http://www.gorillawalker.com/loose-leaf-version-for-psychology.pdfIn PDF document text
    • http://www.gorillawalker.com/settlement-ecology-the-social-and-spatial-organization-of-kofyar-agriculture.pdfIn PDF document text
    • http://www.gorillawalker.com/developing-a-profession-of-librarianship-in-australia.pdfIn PDF document text
    • http://www.gorillawalker.com/experta-en-magia-libro-1-de-las-nieblas-de-avalon.pdfIn PDF document text
    • http://www.gorillawalker.com/understanding-conflict-and-conflict-analysis.pdfIn PDF document text
    • http://www.gorillawalker.com/toxoplasma-gondii-the-model-apicomplexan-perspectives-and-methods.pdfIn PDF document text
    • http://www.gorillawalker.com/interstellarnet-enigma-volume-3.pdfIn PDF document text
    • http://www.gorillawalker.com/ssat-isee-vocabulary-3-pocketbook-2015-edition.pdfIn PDF document text
    • http://www.gorillawalker.com/farmers-almanac-2011.pdfIn PDF document text
    • http://www.gorillawalker.com/colonialism-land-reform-and-class-formation-central-kenya.pdfIn PDF document text
    • http://www.gorillawalker.com/anita-blake-vampire-hunter-circus-of-the-damned-book-2.pdfIn PDF document text
    • http://www.gorillawalker.com/winnie-the-pooh-sticker-calendar-2003-winnie-the-pooh.pdfIn PDF document text
    • http://www.gorillawalker.com/the-adventures-of-carbon.pdfIn PDF document text
    • http://www.gorillawalker.com/economic-report-of-the-president-transmitted-to-the-congress-february.pdfIn PDF document text
    • http://www.gorillawalker.com/business-research-methods-6e.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://www.aiim.org/pdfa/ns/extension/In PDF document text
    • http://www.aiim.org/pdfa/ns/schema#In PDF document text
    • http://www.aiim.org/pdfa/ns/property#In PDF document text
    • http://www.aiim.org/pdfa/ns/id/In PDF document text

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