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/123?keyword=some+facts+about+mollusks In PDF document text

  • https://cdn-cms.f-static.net/uploads/4368478/normal_5f887d5d8b282.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4382189/normal_5f8cf28dc6aeb.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4379359/normal_5f8d050c9524e.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4403417/normal_5f9284a027e6f.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4377114/normal_5f8a75eef24dc.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4384299/normal_5f8ec1a78b801.pdfIn PDF document text
  • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/18ad995.pdfIn PDF document text
  • https://vajibenutiw.weebly.com/uploads/1/3/4/4/134487234/6c4398.pdfIn PDF document text
  • https://papunagaku.weebly.com/uploads/1/3/1/3/131384156/fiwuzewawefujeb.pdfIn PDF document text
  • https://vefozifus.weebly.com/uploads/1/3/4/3/134382693/bb86f366a0f23a.pdfIn PDF document text
  • https://povutepumik.weebly.com/uploads/1/3/2/7/132741486/a3ed947.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000073bf.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000073bf.bin)
  • https://uploads.strikinglycdn.com/files/56709139-9cb9-402c-a982-449afb5eb7e5/um_problema_solver_se_apellida.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1a38d2fb-ff48-44a0-bb64-5270f064c852/6431649292.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/303bfc16-1df0-4021-86ba-26b5b6d19dcd/xenebukulexawexamofov.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0430/7812/3680/files/63524154225.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0498/1404/4827/files/46544315335.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0486/5123/9582/files/64851119836.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0500/5692/1281/files/singapore_bar_model_method.pdfIn PDF document text
  • https://s3.amazonaws.com/bevarolimesale/dunokap.pdfIn PDF document text
  • https://s3.amazonaws.com/wiwuxot/plano_de_aula_educao_infantil_creche.pdfIn PDF document text
  • https://s3.amazonaws.com/henghuili-files2/alyaum_newspaper.pdfIn PDF document text
  • https://s3.amazonaws.com/gifiz/project_on_automobile_industry_in_india.pdfIn PDF document text
  • https://s3.amazonaws.com/jeworurowam/risemes.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 extracted file (font_00_sfnt_off000073bf.bin)
  • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn extracted file (font_01_sfnt_off0000857e.bin)
  • http://www.gnu.org/copyleft/gpl.htmRegularIn extracted file (font_01_sfnt_off0000857e.bin)

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