Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f07165cc05151a1…

MALICIOUS

PDF

41.9 KB Created: 2019-03-17 01:40:16 +03:00 Authoring application: Acrobat PDFMaker 9.1 для Word (via Adobe PDF Library 9.0) First seen: 2019-04-17
MD5: f97286bec145217c07e806a30e569e6e SHA-1: af2aa449b9224cebd8e1284c68bc6dad1ee69e28 SHA-256: 4f07165cc05151a10428055dc3fe0b83280c95a39c767151c9fc96b36dd677f2
92 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier as malicious. It contains numerous embedded URLs pointing to PDF documents hosted on the same domain, suggesting a potential lure for users to download further malicious content. The presence of JavaScript streams within the PDF, though not analyzed in detail here, further supports the possibility of malicious activity. The attack pattern involves social engineering through embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9002

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/irrefutable-proof-mars-origin-i-series-book-ii.pdf In PDF document text
    • http://www.gorillawalker.com/50-activities-for-coaching-mentoring-50-activities-series.pdfIn PDF document text
    • http://www.gorillawalker.com/mel-bay-trumpet-fingering-chart.pdfIn PDF document text
    • http://www.gorillawalker.com/the-royal-mummies-duckworth-egyptology.pdfIn PDF document text
    • http://www.gorillawalker.com/flores-ciegas-spanish-edition.pdfIn PDF document text
    • http://www.gorillawalker.com/hvordan-tegne-sj.pdfIn PDF document text
    • http://www.gorillawalker.com/insight-guides-texas-insight-guide-texas.pdfIn PDF document text
    • http://www.gorillawalker.com/technology-in-the-law-office-second-edition-technology-in-the.pdfIn PDF document text
    • http://www.gorillawalker.com/long-island-airports-ny-images-of-america.pdfIn PDF document text
    • http://www.gorillawalker.com/bioinformatics-converting-data-to-knowledge-workshop-summary.pdfIn PDF document text
    • http://www.gorillawalker.com/nez-perce-country-bison-original.pdfIn PDF document text
    • http://www.gorillawalker.com/pocket-atlas-of-radiographic-anatomy-flexibooks-paperback.pdfIn PDF document text
    • http://www.gorillawalker.com/personality-disorders-clinical-and-social-perspectives-assessment-and-treatment-based.pdfIn PDF document text
    • http://www.gorillawalker.com/dungeoneer-s-survival-guide-official-advanced-dungeons-dragons.pdfIn PDF document text
    • http://www.gorillawalker.com/great-latin-favorites-solos-duets-and-trios-with-piano-accompaniment.pdfIn PDF document text
    • http://www.gorillawalker.com/social-theory-essential-readings.pdfIn PDF document text
    • http://www.gorillawalker.com/metaphysics.pdfIn PDF document text
    • http://www.gorillawalker.com/fostering-reflection-and-providing-feedback-helping-others-learn-from-experiences.pdfIn PDF document text
    • http://www.gorillawalker.com/knight-quest-hologramatic-sticker-book.pdfIn PDF document text
    • http://www.gorillawalker.com/the-youth-of-things-life-and-death-in-the-age.pdfIn PDF document text
    • http://www.gorillawalker.com/el-mercado-de-afores-propuestas-para-reducir-los-riesgos-de.pdfIn PDF document text
    • http://www.gorillawalker.com/the-unmaking-of-gough-kindle-edition.pdfIn PDF document text
    • http://www.gorillawalker.com/innovation-transformation-and-war-counterinsurgency-operations-in-anbar-and-ninewa.pdfIn PDF document text
    • http://www.gorillawalker.com/the-third-reconstruction-moral-mondays-fusion-politics-and-the-rise.pdfIn PDF document text
    • http://www.gorillawalker.com/pro-chord-changes-volume-2-over-150-standards-with-professionally.pdfIn PDF document text
    • http://www.gorillawalker.com/summary-the-now-habit-neil-fiore-a-strategic-program-for.pdfIn PDF document text
    • http://www.gorillawalker.com/the-household-of-god-the-social-world-of-the-pastoral.pdfIn PDF document text
    • http://www.gorillawalker.com/the-umbrella-thief.pdfIn PDF document text
    • http://www.gorillawalker.com/biscuits-cookies-and-crackers-biscuits-cookies-crackers.pdfIn PDF document text
    • http://www.gorillawalker.com/workin-146-on-the-railroad-reminiscences-from-the-age-of.pdfIn PDF document text
    • http://www.gorillawalker.com/year-of-the-tiger-changeling-sisters-book-2-kindle-edition.pdfIn PDF document text
    • http://www.gorillawalker.com/sae-2004-transactions-journal-of-aerospace.pdfIn PDF document text
    • http://www.gorillawalker.com/mango-sudden-decline-investigation-of-fungi-associated-with-mango-sudden.pdfIn PDF document text
    • http://www.gorillawalker.com/become-a-genius-secrets-to-increase-your-brain-power-speed.pdfIn PDF document text
    • http://www.gorillawalker.com/review-of-literature-relating-to-mental-health-legislation-central-research.pdfIn PDF document text
    • http://www.gorillawalker.com/childrens-books-i-wish-i-had-visited-saint-basil-s.pdfIn PDF document text
    • http://www.gorillawalker.com/when-am-i-going-to-be-happy-how-to-break.pdfIn PDF document text
    • http://www.gorillawalker.com/hockey-register-every-player-every-stat.pdfIn PDF document text
    • http://www.gorillawalker.com/america-s-trillion-dollar-housing-mistake-the-failure-of-american.pdfIn PDF document text
    • http://www.gorillawalker.com/malcolm-finney-medical-detective-the-case-of-itch-and-rash.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

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_000_off00000209.js decompressed-pdf-stream PDF FlateDecoded stream at offset 0x209 14508 bytes
SHA-256: 4c1cd9a5f364472b33a50f5408bcde84fbec33f8599df7a17f49b0e28ca5abd1
stream_001_off00000e66.js decompressed-pdf-stream PDF FlateDecoded stream at offset 0xE66 36548 bytes
SHA-256: f03052b99587da8a3b6d2aadbcc3cf8a30b8b37cda768d1dfd1af88933a518d8

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