Malicious PDF — malware analysis report

Static analysis result for SHA-256 f45520f4d55dc772…

MALICIOUS

PDF

33.3 KB Created: 2019-10-29 07:28:55 +03:00 Authoring application: PScript5.dll Version 5.2.2 (via iText 2.1.7 by 1T3XT) First seen: 2021-06-28
MD5: 56edecab3aee57b3f37c65fd51674e14 SHA-1: 545de37896dc134363143a52c0ec1ddbacee368b SHA-256: f45520f4d55dc772f3579bb5bfe9b69f0df4f60eb6c9ebbcf77ef6c01bcc8927
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a malicious intent to redirect the user to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8529

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/on-the-court-with-hakeem-olajuwon-matt-christopher-sports-biographies.pdf In PDF document text
    • http://www.gorillawalker.com/love-intertwined-vol-1-three-tales-of-interracial-romance-and.pdfIn PDF document text
    • http://www.gorillawalker.com/photoshop-cs4-digital-photo-processing-228-cases-chinese-edition.pdfIn PDF document text
    • http://www.gorillawalker.com/my-bilingual-book-150-sight-english-150-korean.pdfIn PDF document text
    • http://www.gorillawalker.com/the-annals-of-america-volume-16-1940-1949-the-second.pdfIn PDF document text
    • http://www.gorillawalker.com/start-your-own-tax-exempt-think-tank-effective-self-defense.pdfIn PDF document text
    • http://www.gorillawalker.com/concerto-in-c-major-for-mandolin-strings-and-basso-continuo.pdfIn PDF document text
    • http://www.gorillawalker.com/grow-it-eat-it.pdfIn PDF document text
    • http://www.gorillawalker.com/waterway-guide-chartbook-newport-to-canada-1988.pdfIn PDF document text
    • http://www.gorillawalker.com/100-facts-plant-life-kindle-edition.pdfIn PDF document text
    • http://www.gorillawalker.com/praise-for-adhd-guidelines-attention-deficit-hyperactivity-disorder-brief-article.pdfIn PDF document text
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    • http://www.gorillawalker.com/heidi-heidi-spanish-edition-clasicos-en-accion-coleccion.pdfIn PDF document text
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    • http://www.gorillawalker.com/emulsions-and-nanosuspensions-for-the-formulation-of-poorly-soluble-drugs.pdfIn PDF document text
    • http://www.gorillawalker.com/cinderella-from-fabletown-with-love-paperback.pdfIn PDF document text
    • http://www.gorillawalker.com/central-south-america-by-road-bradt-guides.pdfIn PDF document text
    • http://www.gorillawalker.com/set-theory-and-logic-undergraduate-mathematics-books.pdfIn PDF document text
    • http://www.gorillawalker.com/green-politics.pdfIn PDF document text
    • http://www.gorillawalker.com/cpce-secrets-study-guide-cpce-test-review-for-the-counselor.pdfIn PDF document text
    • http://www.gorillawalker.com/staying-power-why-people-leave-the-church-over-change-and.pdfIn PDF document text
    • http://www.gorillawalker.com/acca-part-2-2-1-information-systems-practice-and-revision.pdfIn PDF document text
    • http://www.gorillawalker.com/start-your-own-freight-brokerage-business-your-step-by-step.pdfIn PDF document text
    • http://www.gorillawalker.com/johannes-brahms-2-vol-set-pb.pdfIn PDF document text
    • http://www.gorillawalker.com/more-tunes-for-my-recorder-soprano-alto-recorder-teacher-edition.pdfIn PDF document text
    • http://www.gorillawalker.com/law-express-question-and-answer-tort-law-law-express-questions.pdfIn PDF document text
    • http://www.gorillawalker.com/essai-sur-la-nature-le-but-et-les-moyens-de.pdfIn PDF document text
    • http://www.gorillawalker.com/davis-s-drug-guide-for-nurses-resource-kit-cd-rom.pdfIn PDF document text
    • http://www.gorillawalker.com/zero-gi-the-menagerie-s-book-9.pdfIn PDF document text
    • http://www.gorillawalker.com/dos-internals.pdfIn PDF document text
    • http://www.gorillawalker.com/the-sg-guitar-book-50-years-of-gibson-s-stylish.pdfIn PDF document text
    • http://www.gorillawalker.com/japan-dreams-collected-stories-volume-2-stories-7-12-the.pdfIn PDF document text
    • http://www.gorillawalker.com/stuff-and-nonsense-a-touch-and-feel-book-with-a.pdfIn PDF document text
    • http://www.gorillawalker.com/polaris-lessons-in-risk-management.pdfIn PDF document text
    • http://www.gorillawalker.com/heat-pump-technology-3rd-third-edition.pdfIn PDF document text
    • http://www.gorillawalker.com/complete-english-as-a-foreign-language-beginner-to-intermediate-course.pdfIn PDF document text
    • http://www.gorillawalker.com/orthopedics-speller.pdfIn PDF document text
    • http://www.gorillawalker.com/the-book-of-skin.pdfIn PDF document text
    • http://www.gorillawalker.com/go-with-microsoft-vista-getting-started.pdfIn PDF document text
    • http://www.gorillawalker.com/penury-into-plenty-dearth-and-the-making-of-knowledge-in.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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