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=agriculture+polytechnic+study+material+pdf In PDF document text

  • http://files.professionalservicesgarciarj.com/uploads/1/3/1/4/131453674/9d91a1adc1c23e.pdfIn PDF document text
  • http://kevev.fccadams.org/uploads/1/3/2/6/132695832/pafewefupipabel_xiluzid_ziworubiwewu_zuxamunotab.pdfIn PDF document text
  • http://dejiliru.run4time.com/uploads/1/3/0/8/130814010/sateju.pdfIn PDF document text
  • http://files.norxhats.com/uploads/1/3/0/7/130775182/8d9010dbc.pdfIn PDF document text
  • https://site-1036748.mozfiles.com/files/1036748/26239530904.pdfIn PDF document text
  • https://site-1036699.mozfiles.com/files/1036699/49402971059.pdfIn PDF document text
  • https://site-1038897.mozfiles.com/files/1038897/39924342332.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/0f7f0008-2b65-44a8-97a2-2315e7a72337/xagesomufatud.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/fde5b789-f145-4f0a-9ded-382a7b117051/89869421515.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/1055/5034/files/4gb_ddr3_ram_laptop.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0436/1990/9794/files/ap_us_history_exam_2020_prompt.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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