Malicious PDF — malware analysis report

Heuristics 6

• 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.
• LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
  Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
• 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.
• External URI info PDF_URI
  PDF contains an external URL action
• 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://kuzutuzo.ru/award?keyword=lower+back+stretches+for+pain+relief+pdf PDF link annotation

  • https://xumizobizuzu.weebly.com/uploads/1/3/4/6/134688834/4914633.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4449605/normal_600adc882640d.pdfIn PDF document text
  • https://mamowolo.weebly.com/uploads/1/3/4/7/134714390/bugodageripada.pdfIn PDF document text
  • https://gebapawuvafiv.weebly.com/uploads/1/3/4/5/134519736/murabazuwunabapiwal.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4456116/normal_5ffe99c950337.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4480397/normal_605f5a441d052.pdfIn PDF document text
  • https://tujozidu.weebly.com/uploads/1/3/4/6/134694944/zafove_sebibupifovo_magakugala.pdfIn PDF document text
  • http://ramidavukul.medianewsonline.com/physical_science_grade_11_textbook_download.pdfIn PDF document text
  • https://kurupatasewa.weebly.com/uploads/1/3/5/9/135958836/puvapaguravi.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4486061/normal_5fdfbe1f98ab5.pdfIn PDF document text
  • https://63a0a607-6d1b-4b95-a813-f1b07cabc719.filesusIn macro / runtime command snippet
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://www.daltonmaag.com/In PDF document text
  • https://d1159ab4-cbf5-42eb-897b-83a5e94cd7da.filesusr.com/ugd/536122_afde98ba33754e4ea997614a01d94eba.pdf?index=trueIn PDF document text
  • http://kemesid.onlinewebshop.net/veguboxis.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/865fa72f-eb4b-4c39-8d93-412f58d13398/tecumseh_hm80_carb_settings.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/76ec74d4-5c1e-4578-b8f5-5de19f30e8ec/structured_computer_organization_6th_edition_solutions.pdfIn PDF document text
  • https://s3.amazonaws.com/bipovoromoj/76511454405.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/992249bc-9ffe-46be-b4f6-6042aba9e9cb/how_to_check_serial_number_of_laptop_via_cmd.pdfIn PDF document text
  • https://63a0a607-6d1b-4b95-a813-f1b07cabc719.filesusr.com/ugd/ad56f2_309ee2251fbe487ea9a30ff0ececc95f.pdf?index=trueIn PDF document text
  • https://uploads.strikinglycdn.com/files/2e1b391e-4c54-44a4-b8c0-aba8c8f40dec/38287905072.pdfIn macro / runtime command snippet
  • https://s3.amazonaws.com/sabobenuwe/smart_watch_browser_android.pdfIn PDF document text
  • https://s3.amazonaws.com/zepifudoxapo/24987669865.pdfIn PDF document text
  • https://711920be-b761-4f0e-a604-762b26663b16.filesusr.com/ugd/ffcbea_8ef522b438514977a2c8633f7b16fc64.pdf?index=trueIn 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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