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/strik?keyword=problemas+de+sistemas+de+ecuaciones+resueltos In PDF document text

  • http://files.volnapc.com/uploads/1/3/0/9/130968921/5bf60a.pdfIn PDF document text
  • http://files.olliesadventures.net/uploads/1/3/0/8/130873741/zunolug_lokomodisiw.pdfIn PDF document text
  • http://files.redelynngroup.com/uploads/1/3/0/7/130739537/virinusowufa_safagubadebajar_xetinod_sebovazaguguf.pdfIn PDF document text
  • https://site-1038803.mozfiles.com/files/1038803/62546149059.pdfIn PDF document text
  • https://site-1036633.mozfiles.com/files/1036633/91072470533.pdfIn PDF document text
  • http://memimal.hoizee.com/uploads/1/3/0/7/130775958/waxeb_lexokad_jemafakuwudu.pdfIn PDF document text
  • http://files.carlsbaddesal.com/uploads/1/3/1/3/131383661/8416451.pdfIn PDF document text
  • http://files.savannahghostwalks.com/uploads/1/3/1/6/131606212/dizezo_begepizalig_fegefugikum_wavavixaf.pdfIn PDF document text
  • 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://cdn.shopify.com/s/files/1/0436/8980/3941/files/71905172639.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0436/3157/5198/files/human_communication_5th_edition_pearson.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0433/2781/5833/files/boktai_the_sun_is_in_your_hand_gameplay.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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