Malicious PDF — malware analysis report

Heuristics 5

• 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.
• Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
  Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
• External URI info PDF_URI
  PDF contains an external URL action
• Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
  The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
• 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 https://traffset.ru/123?keyword=stoichiometry+worksheet+3+gram+to+gram+key PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4390999/normal_5fa1611f5eeae.pdfIn PDF document text
  • https://gorokawuse.weebly.com/uploads/1/3/4/4/134489158/1235669.pdfIn PDF document text
  • https://muzokive.weebly.com/uploads/1/3/4/4/134498707/vibebewajarubeguti.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4416927/normal_5f9fe5c88b2e8.pdfIn PDF document text
  • https://jiwadurator.weebly.com/uploads/1/3/0/7/130776405/gomilimitara.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4387035/normal_5f930c85e8760.pdfIn PDF document text
  • https://razomidubijime.weebly.com/uploads/1/3/4/3/134395635/4658877.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4381751/normal_5f8e7a9f06032.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365580/normal_5f9c2f9e1d07a.pdfIn PDF document text
  • https://pexazunawilaga.weebly.com/uploads/1/3/4/2/134265520/vutuveni_gubejedeke_fetinuv.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://s3.amazonaws.com/potofaw/asamardhuni_jeeva_yatra_book_download.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e2c772a0-8afe-453b-aa2a-d0a8fea9d81c/99330861096.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/5b2bab08-f12c-426e-a24d-be042ed723c8/jotajagilidipipane.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/pdf/1.3/In PDF document text
  • http://ns.adobe.com/xap/1.0/In PDF document text
  • http://ns.adobe.com/xap/1.0/mm/In PDF document text
  • http://ns.adobe.com/xap/1.0/rights/In PDF document text
  • http://scripts.sil.org/OFLIn PDF document text

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