Malicious PDF — malware analysis report

Heuristics 4

• PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
  PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
• 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.
• 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://traffine.ru/123?keyword=simple+binary+ionic+compounds+worksheet+key In PDF document text

  • https://manabaxijex.weebly.com/uploads/1/3/4/6/134626004/5125298.pdfIn PDF document text
  • https://fewevivib.weebly.com/uploads/1/3/0/8/130813821/febikadunoporizedi.pdfIn PDF document text
  • https://datevapo.weebly.com/uploads/1/3/4/3/134338939/8628112.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/zesotat/husker_spring_game_tickets.pdfIn PDF document text
  • https://buxefonatis.files.wordpress.com/2020/11/toronto_notes_2019_price.pdfIn PDF document text
  • https://manetomimexa.files.wordpress.com/2020/11/68091325827.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e547620a-a805-46ac-8cba-acea618a2420/42750651443.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/ac200132-de49-4396-9969-b32d7060e38d/15951710902.pdfIn PDF document text
  • https://jirovujama.files.wordpress.com/2020/11/authorization_letter_sample_on_behalf.pdfIn PDF document text
  • https://dokilujaze.files.wordpress.com/2020/11/46505601668.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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