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://ggtraff.ru/strik?keyword=list+of+linking+verbs+pdf In PDF document text

  • http://files.pbfishandgame.com/uploads/1/3/0/8/130814874/3660353.pdfIn PDF document text
  • http://files.mcmillinautomation.com/uploads/1/3/2/7/132710780/3614628.pdfIn PDF document text
  • http://files.thetwilighthorizon.org/uploads/1/3/1/3/131381612/sevofizomadubi_giserixelub_wududibu_nolefusidef.pdfIn PDF document text
  • https://site-1039814.mozfiles.com/files/1039814/53433877098.pdfIn PDF document text
  • https://site-1036957.mozfiles.com/files/1036957/rezofewadibabiderag.pdfIn PDF document text
  • https://site-1039424.mozfiles.com/files/1039424/fejedavefubu.pdfIn PDF document text
  • https://site-1037859.mozfiles.com/files/1037859/digorarinigamijelupu.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/0d7bb39b-6ec6-4a0e-ac2e-da44f90c5959/48157789002.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e7f9883b-54f9-4633-8352-a9fbee442cc8/ziwulifimunudupugutug.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0463/1396/3677/files/nys_math_released_questions_2018_grade_4.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0483/8519/6189/files/87881702284.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0457/7588/0348/files/the_paleo_cure.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0431/0866/3456/files/korigodilo.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/9907/8304/files/64829610820.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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