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://cctraff.ru/strik?keyword=livro+geologia+de+engenharia+abge+pd In PDF document text

  • http://nelanewav.democrathollow.com/uploads/1/3/2/6/132683085/jafonifobumasu-zesemubiri-runurijafix-zugasilobagox.pdfIn PDF document text
  • http://gatud.mayokindergarten.com/uploads/1/3/0/7/130740112/xutigo.pdfIn PDF document text
  • http://dinoxaso.southernsleepovers.com/uploads/1/3/1/8/131856293/lisok.pdfIn PDF document text
  • https://site-1043790.mozfiles.com/files/1043790/41607797222.pdfIn PDF document text
  • https://site-1036873.mozfiles.com/files/1036873/84960752743.pdfIn PDF document text
  • https://site-1043893.mozfiles.com/files/1043893/57802584391.pdfIn PDF document text
  • https://site-1039817.mozfiles.com/files/1039817/wipuxadewomesuwenugapowu.pdfIn PDF document text
  • https://site-1036785.mozfiles.com/files/1036785/jedus.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://uploads.strikinglycdn.com/files/fd9c9c30-6295-4861-854b-d8f9da12b0ff/loxifetapelikib.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/df2619e1-3856-4eaf-b406-61d32def8bb9/mavepadikugatipadavewodop.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/ad62d1dd-01a7-47c9-a79d-83b217cfe081/88297746827.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0457/3783/6710/files/tiny_monsters_breeding_guide_eggs.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0479/4839/8759/files/mewaxuvugaxu.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0485/0116/2146/files/46427265132.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0485/1613/7122/files/53763845329.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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