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/pify?keyword=third+grade+science+standards In PDF document text

  • http://funilu.doggynosesandyogaposes.com/uploads/1/3/2/6/132695375/bemipoxenaguwuja.pdfIn PDF document text
  • http://files.amachineofwords.com/uploads/1/3/0/8/130873794/6245922.pdfIn PDF document text
  • http://juvij.gamadin.com/uploads/1/3/2/8/132815732/jukanosoze_jelunozares_maxisopaxata.pdfIn PDF document text
  • https://site-1036824.mozfiles.com/files/1036824/gewiji.pdfIn PDF document text
  • https://site-1038401.mozfiles.com/files/1038401/moluzewa.pdfIn PDF document text
  • https://site-1036975.mozfiles.com/files/1036975/48246381567.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/ee2b4a0d-57a0-4220-a5ba-c0c5d9743511/87446957400.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/566199ae-8ee4-4123-ac55-385f05fde473/77459887873.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2091b9f1-3259-4fe6-af1e-11fb370dc33e/1224780045.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/40c24ed8-4dca-4710-88c7-ec7b7c1afc6f/69863903525.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0436/8393/8457/files/bobuxuxugorizexa.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/7405/9430/files/11096387719.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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