Malicious PDF — malware analysis report

Heuristics 5

• 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 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.
• 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=negative+prefixes+worksheet In PDF document text

  • http://files.africanandcaribbeandelights.com/uploads/1/3/0/8/130874610/7188004.pdfIn PDF document text
  • http://pikapiva.pinnaclekidz.com/uploads/1/3/1/6/131606289/dovori.pdfIn PDF document text
  • http://files.immortalize-your-moments.studio/uploads/1/3/0/7/130739758/2290900.pdfIn PDF document text
  • http://files.openingnightcostumes.com/uploads/1/3/1/3/131380504/roxapoparapan_seser_tujoja.pdfIn PDF document text
  • http://files.dlhp-solutions.com/uploads/1/3/1/4/131438379/bixedatowuvabu-gedesil.pdfIn PDF document text
  • http://files.strainjapanschool.com/uploads/1/3/0/7/130775834/9714942.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/4226b2f0-e0dc-4e07-b0b5-62000dd11a30/labinowajexil.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0483/9391/2480/files/fadimoxadisivazuzi.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0436/9540/7269/files/18563602561.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0483/8326/2869/files/hidalgo_county_clerk_vanguard.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0430/4073/5381/files/burn_permit_loudon_county_tennessee.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0433/6405/7238/files/jufiwalametivitimine.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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