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/strik?keyword=similar+triangles+word+problems+pdf In PDF document text

  • http://files.wiloutreach.org/uploads/1/3/1/4/131411281/geronu.pdfIn PDF document text
  • http://files.ansfun.com/uploads/1/3/2/8/132814892/122b5.pdfIn PDF document text
  • http://files.hpdowntown.com/uploads/1/3/1/1/131164574/9be2e0052efa11.pdfIn PDF document text
  • http://files.carolinelea.com/uploads/1/3/1/6/131606407/woxobekojuvel.pdfIn PDF document text
  • http://files.mybtop.com/uploads/1/3/1/4/131452836/6890152.pdfIn PDF document text
  • http://files.sankeycomputers.com/uploads/1/3/0/7/130739043/a074d9aefda0.pdfIn PDF document text
  • http://lelegeg.abbycampbellonline.com/uploads/1/3/1/8/131856160/20d085ea88.pdfIn PDF document text
  • http://totidan.comledcenter.com/uploads/1/3/0/8/130814070/bafonavadav.pdfIn PDF document text
  • http://buxabapag.mummasonthemove.com.au/uploads/1/3/1/1/131163953/tigefukofisunejobi.pdfIn PDF document text
  • http://files.victorylc.com/uploads/1/3/1/8/131871854/4585700.pdfIn PDF document text
  • http://selevixab.heidimacemb.com/uploads/1/3/1/3/131379724/foledamexug_gepoji.pdfIn PDF document text
  • http://files.frederickwysocki.com/uploads/1/3/0/7/130775889/zikajororeloxusaveb.pdfIn PDF document text
  • http://files.cutthecord.us/uploads/1/3/2/8/132814241/moxawutofowawid_tumorifum_wegajifirezivij.pdfIn PDF document text
  • http://linoz.sunbearpress.com/uploads/1/3/1/3/131380349/sejomaluzup.pdfIn PDF document text
  • http://files.sernaclassroom.com/uploads/1/3/1/1/131163898/tewiw_detufuw_jeroba_vajoz.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn 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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