Malicious PDF — malware analysis report

Heuristics 6

• 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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://ggtraff.ru/strik?keyword=biochemistry+and+clinical+pathology+book+pdf+download In PDF document text

  • https://cdn-cms.f-static.net/uploads/4366031/normal_5f86f59f38267.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365553/normal_5f87078982bb0.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365562/normal_5f86f4ff0c3aa.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365553/normal_5f86f69fe16ea.pdfIn PDF document text
  • https://site-1036753.mozfiles.com/files/1036753/rasoruxasotud.pdfIn PDF document text
  • https://site-1040512.mozfiles.com/files/1040512/74843486745.pdfIn PDF document text
  • https://site-1043978.mozfiles.com/files/1043978/8900784634.pdfIn PDF document text
  • https://site-1038556.mozfiles.com/files/1038556/fazikavexovidubisatawu.pdfIn PDF document text
  • https://gevafitasib.weebly.com/uploads/1/3/1/3/131380901/e27909d0be.pdfIn PDF document text
  • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/9594994.pdfIn PDF document text
  • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/7775416.pdfIn PDF document text
  • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/4041939.pdfIn PDF document text
  • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/1515306.pdfIn PDF document text
  • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/7304884.pdfIn PDF document text
  • https://site-1043396.mozfiles.com/files/1043396/jasapilotiwunixuja.pdfIn PDF document text
  • https://site-1043371.mozfiles.com/files/1043371/jizopur.pdfIn PDF document text
  • https://site-1040208.mozfiles.com/files/1040208/toledopawidujiwiw.pdfIn PDF document text
  • https://site-1040878.mozfiles.com/files/1040878/24168392932.pdfIn PDF document text
  • https://site-1042821.mozfiles.com/files/1042821/jokegudixibexaxipof.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://cdn.shopify.com/s/files/1/0479/2775/4919/files/who_counters_draven.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0439/0758/0072/files/no_trunk_route_for_a_team_on_the_way.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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