Malicious PDF — malware analysis report

Heuristics 7

• 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.
• Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
  Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
• Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
  Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
• 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://gettraff.ru/123?keyword=best+open+source+android+browser In PDF document text

  • https://vuzevarezevarot.weebly.com/uploads/1/3/0/7/130740461/8108700.pdfIn PDF document text
  • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/7d3707d5d.pdfIn PDF document text
  • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/xududev-ledavodu-jatulivarolaxe-bixebenal.pdfIn PDF document text
  • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/8554420.pdfIn PDF document text
  • https://vibebivenef.weebly.com/uploads/1/3/1/4/131412032/8366742.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366035/normal_5f86febc4b131.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365646/normal_5f873f3fdd9cd.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366044/normal_5f87055800fc6.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366017/normal_5f8703b50005d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365608/normal_5f874f80c5338.pdfIn PDF document text
  • https://site-1041173.mozfiles.com/files/1041173/36687718768.pdfIn PDF document text
  • https://site-1041090.mozfiles.com/files/1041090/tuxivifijufewinoradam.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366003/normal_5f871f0b2780a.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366377/normal_5f872280bfa1e.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/1e78464f-550a-4295-8248-051e24ef4b74/40711704323.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f9d1a28a-83a1-42dc-8f23-4d72c67e2695/13164905232.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/77557657-03c2-4eca-b5ab-c08d1ae5b333/70068061091.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/ea148c81-65ef-4e77-b5ff-6b0b72ae2d9c/bixagig.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0480/1475/3951/files/24362517195.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0431/8789/6480/files/potty_training_in_3_days_free.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0478/4173/8911/files/fozakoraja.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0430/0704/9877/files/iaaf_scoring_tables_formula.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0433/2496/5019/files/55683752638.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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