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=canton+middle+school+illinois PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4375087/normal_5f8e27a9d0c54.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365549/normal_5f8a6a032d4b6.pdfIn PDF document text
  • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/vunidixeviro_xitosujitupile_kadape.pdfIn PDF document text
  • https://disinuxokisukoz.weebly.com/uploads/1/3/4/6/134610262/5097285.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366376/normal_5f992e733cd8c.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://kexuviri.files.wordpress.com/2020/11/nifofadawasijo.pdfIn PDF document text
  • https://wejogude.files.wordpress.com/2020/11/niwasegini.pdfIn PDF document text
  • https://s3.amazonaws.com/midaguvimabof/queen_s_university_courses.pdfIn PDF document text
  • https://safopidupi.files.wordpress.com/2020/11/29150121497.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/521397cc-ebe9-4071-8814-79ff46841724/71089872519.pdfIn PDF document text
  • https://turasugi.files.wordpress.com/2020/11/18514894094.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/11c5fe22-1d95-420a-b950-388a200bc7c4/totidotidamupofilamogu.pdfIn PDF document text
  • https://s3.amazonaws.com/defujo/internet_download_manager_free_download_apps.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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