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/aws?keyword=memset+c%252B%252B+array In PDF document text

  • https://cdn-cms.f-static.net/uploads/4401985/normal_5f9958c1d1dd6.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4425921/normal_5f9f68a93347c.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366031/normal_5f8d5f5e09750.pdfIn PDF document text
  • https://bawujepal.weebly.com/uploads/1/3/4/5/134515469/7766804.pdfIn PDF document text
  • https://vajibenutiw.weebly.com/uploads/1/3/4/4/134487234/6629802.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4404750/normal_5f96be3f4d597.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4410722/normal_5f94515abf1b5.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365552/normal_5f8c215e3481b.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/746c97ae-7c2b-40a4-9073-40422cd15177/27953025331.pdfIn PDF document text
  • https://dibumojegud.files.wordpress.com/2020/11/bootstrap_modal_ajax_file_upload.pdfIn PDF document text
  • https://sirilab.files.wordpress.com/2020/11/pukoloxutudikadijogo.pdfIn PDF document text
  • https://pixetimel.files.wordpress.com/2020/11/91115823019.pdfIn PDF document text
  • https://xanafegeze.files.wordpress.com/2020/11/13740113681.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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