Malicious PDF — malware analysis report

Heuristics 4

• 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 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/aws?keyword=punchline+algebra+book+b+answers+12.6 In PDF document text

  • https://cdn-cms.f-static.net/uploads/4386073/normal_5f8cfde8210fb.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4374369/normal_5f89b085b601f.pdfIn PDF document text
  • https://murikupa.weebly.com/uploads/1/3/4/4/134481598/sakevidofesalog.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4374545/normal_5f8a0d54c3cc4.pdfIn PDF document text
  • https://jarapitoxedomel.weebly.com/uploads/1/3/1/4/131437170/dutogezabo-kazugewiruriwid-norexi-doparoxof.pdfIn PDF document text
  • https://vuguzakinizole.weebly.com/uploads/1/3/4/4/134493236/dd6f321d2d4b942.pdfIn PDF document text
  • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/837046.pdfIn PDF document text
  • https://vodiwisilob.weebly.com/uploads/1/3/2/6/132681054/3218998.pdfIn PDF document text
  • https://kanudepu.weebly.com/uploads/1/3/2/7/132740929/7525986.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366032/normal_5fa078db15e5b.pdfIn PDF document text
  • https://bemaxeviliw.weebly.com/uploads/1/3/4/4/134482954/cc8a1.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00004f00.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00004f00.bin)
  • https://s3.amazonaws.com/begijufadi/conjuguemos_student_login.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d647a5f8-6cff-4082-80c6-beb46f7e7252/50115510016.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c381ba5a-d52a-4472-814d-d64f19909af1/whole_greens_cbd_coupon_code.pdfIn PDF document text
  • https://s3.amazonaws.com/wusigipufuvowix/calendario_electoral_colombia_2019.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/7558c863-fd41-4479-9f43-680d508c4566/59825939680.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e9af9ea4-0aa8-4e71-8d0c-22f01baba5a1/kiwujokovakerasewaxemotax.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_off00004f00.bin)
  • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off000085c8.bin)
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off000085c8.bin)

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