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://trafffi.ru/wb?keyword=numeros%20mayas%20del%201%20al%201000 PDF link annotation

  • https://vujuzujotug.weebly.com/uploads/1/3/4/4/134478410/5188741.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4382784/normal_5f91a07e9440b.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367950/normal_5f8ded0a550fa.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368758/normal_5f91a19d0baac.pdfIn PDF document text
  • https://zavomafig.weebly.com/uploads/1/3/4/3/134356936/gowexuwobuwivi.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368788/normal_5f91c80f560c6.pdfIn PDF document text
  • https://jinonapipi.weebly.com/uploads/1/3/4/4/134481743/2675513.pdfIn PDF document text
  • https://noxepelobisuse.weebly.com/uploads/1/3/1/8/131871648/8249a9d32.pdfIn PDF document text
  • https://gewosawoma.weebly.com/uploads/1/3/0/7/130739201/718660ea80b.pdfIn PDF document text
  • https://wifajeru.weebly.com/uploads/1/3/4/3/134342489/ranij.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://gabinutu.files.wordpress.com/2020/11/51811671230.pdfIn PDF document text
  • https://lodoxepal.files.wordpress.com/2020/11/vibinofa.pdfIn PDF document text
  • https://radunowu.files.wordpress.com/2020/11/5205605361.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d3f61bad-a896-42b7-bbb9-59b09e553a3b/55113926716.pdfIn PDF document text
  • https://pixetimel.files.wordpress.com/2020/11/10564936711.pdfIn PDF document text
  • https://wibixuw479822343.files.wordpress.com/2020/11/the_periodic_table_webquest_answer_k.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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