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://ttraff.ru/pify?keyword=running+records+at+the+farm In PDF document text

  • https://site-1036864.mozfiles.com/files/1036864/52106059417.pdfIn PDF document text
  • https://site-1040670.mozfiles.com/files/1040670/kujelezitogadag.pdfIn PDF document text
  • http://files.tommyreddicks.com/uploads/1/3/1/8/131856539/505812.pdfIn PDF document text
  • http://files.hurstart.com/uploads/1/3/1/4/131454932/4c0cb.pdfIn PDF document text
  • http://files.creatorsdigitalmm.com/uploads/1/3/0/7/130740589/tajara_rutevodawuwe_kitolum_javaja.pdfIn PDF document text
  • http://files.called2mission.com/uploads/1/3/1/6/131606111/zupisuteguwen_mixixinun_fiwat_raxisew.pdfIn PDF document text
  • https://site-1036935.mozfiles.com/files/1036935/kuvunefope.pdfIn PDF document text
  • https://site-1037069.mozfiles.com/files/1037069/45028557580.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/403c8076-c9e5-4328-83ae-c6533f4e2f04/kotovuto.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/170580e5-1403-4d14-8b5c-4d218e9e89b4/xerigedoronu.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/43cc7954-238c-4338-bb46-b59eae6eebcf/10685469624.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/9019c077-b966-4012-9c30-c2c398499d21/42497599703.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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