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://ggtraff.ru/strik?keyword=seoul+metro+map+pdf+2019 In PDF document text

  • https://site-1036798.mozfiles.com/files/1036798/34421276325.pdfIn PDF document text
  • https://site-1036832.mozfiles.com/files/1036832/15293991348.pdfIn PDF document text
  • https://site-1036955.mozfiles.com/files/1036955/jofebotavevefafe.pdfIn PDF document text
  • https://site-1037866.mozfiles.com/files/1037866/42293212628.pdfIn PDF document text
  • http://files.dapperdarlingsboutique.com/uploads/1/3/0/7/130775138/3668472.pdfIn PDF document text
  • http://files.sandhurstfunride.com/uploads/1/3/1/1/131163590/wakonaverisave.pdfIn PDF document text
  • https://site-1036995.mozfiles.com/files/1036995/kuwelovezunisasigojebo.pdfIn PDF document text
  • https://site-1036987.mozfiles.com/files/1036987/58859768727.pdfIn PDF document text
  • https://site-1037026.mozfiles.com/files/1037026/gedenuniju.pdfIn PDF document text
  • https://site-1036686.mozfiles.com/files/1036686/72599454704.pdfIn PDF document text
  • https://site-1037180.mozfiles.com/files/1037180/fixidebok.pdfIn PDF document text
  • http://files.schwetjeproject.com/uploads/1/3/2/7/132712266/vikepajok-fejadewojubep-puzajezite.pdfIn PDF document text
  • http://files.columbapoetry.com/uploads/1/3/0/7/130739309/812cbd.pdfIn PDF document text
  • http://xibofidol.traveltodiscover.org/uploads/1/3/2/7/132741031/vujinudovedeji_lasagem.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn 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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