Malicious PDF — malware analysis report

Heuristics 6

• 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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://ggtraff.ru/strik?keyword=worksheets+on+gerunds+and+infinitives In PDF document text

  • http://files.adametranslationservices.com/uploads/1/3/1/8/131871633/jinizazugovak_kimibejino_tufajipimetuno.pdfIn PDF document text
  • http://files.elginowl.com/uploads/1/3/1/4/131437666/lisimozugu-vugoxibemor.pdfIn PDF document text
  • http://files.classroomacademy.org/uploads/1/3/0/7/130739155/likoro.pdfIn PDF document text
  • http://files.theclaypen.com/uploads/1/3/1/6/131636825/nilasigitose.pdfIn PDF document text
  • http://vuben.videotrowbridge.org/uploads/1/3/1/1/131163909/4192552.pdfIn PDF document text
  • http://files.janetbabymom.com/uploads/1/3/1/8/131871705/9620165.pdfIn PDF document text
  • http://warisi.crossplainspd.org/uploads/1/3/1/4/131453028/91f0858705cd2.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00004fbe.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00004fbe.bin)
  • https://uploads.strikinglycdn.com/files/4b325518-642e-4a5c-ae79-43a3eefe461c/20196000385.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/84945809-0f8a-4557-baaf-8e91cc01e5a4/rowufoxebotavujojep.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/61f6e537-ae80-49f6-aa13-17ac7d29d3ab/59316121145.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0433/8070/3382/files/wijagawamolojin.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0492/2939/8182/files/govufuwixoxugixudevorawol.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/lowubezigipoxigog.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_off00004fbe.bin)

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