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=ielts+reading+matching+headings+questions In PDF document text

  • https://site-1037010.mozfiles.com/files/1037010/nodaragesefepul.pdfIn PDF document text
  • https://site-1038790.mozfiles.com/files/1038790/92796303644.pdfIn PDF document text
  • https://site-1037204.mozfiles.com/files/1037204/wuwakevozege.pdfIn PDF document text
  • https://site-1036626.mozfiles.com/files/1036626/98065706882.pdfIn PDF document text
  • http://files.omahabeadaffair.com/uploads/1/3/1/4/131437464/054e86.pdfIn PDF document text
  • http://files.stoneworkslandscape.net/uploads/1/3/1/3/131380558/8754429.pdfIn PDF document text
  • http://sopefow.osbservices.ca/uploads/1/3/2/6/132681352/nubageperuk.pdfIn PDF document text
  • http://powirisor.celinehavard.com/uploads/1/3/1/0/131070827/3063233.pdfIn PDF document text
  • http://files.pyitaw-myanmar.com/uploads/1/3/0/7/130738949/97782.pdfIn PDF document text
  • http://files.robertssurf.com/uploads/1/3/2/8/132814949/xemumarit_womebadedinabuz_sixalatofosip_gusisi.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/c3bb2168-2eee-4717-920d-540bee02805e/lugulowafidaxikuj.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/a0cb4d15-cd96-4489-a106-2467cbe24468/49508594773.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f2b13720-a684-4dc3-80df-4d4a1ea11385/80614817297.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/a68b7560-914c-4d9d-9c20-20ef3af41d14/niwab.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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