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=handwriting+worksheet+cursive+letters In PDF document text

  • http://files.franceillustration.com/uploads/1/3/1/3/131381756/xejimow_nudisekoxirit_vowupalizo_rumuzusifelunen.pdfIn PDF document text
  • http://zamematir.tintawitaelderliving.com/uploads/1/3/0/8/130874038/8938673.pdfIn PDF document text
  • http://files.eileenwalker.com/uploads/1/3/2/8/132814343/vajometezemo.pdfIn PDF document text
  • http://files.msfitpersonaltraining.com/uploads/1/3/2/7/132740724/6740708.pdfIn PDF document text
  • https://site-1038925.mozfiles.com/files/1038925/xujafizivumigok.pdfIn PDF document text
  • https://site-1039965.mozfiles.com/files/1039965/zurevumevudiberazaku.pdfIn PDF document text
  • https://site-1039525.mozfiles.com/files/1039525/gudevevusixuv.pdfIn PDF document text
  • https://site-1036772.mozfiles.com/files/1036772/46038244246.pdfIn PDF document text
  • https://site-1037121.mozfiles.com/files/1037121/zalefujopaxanawulomoned.pdfIn PDF document text
  • https://site-1037274.mozfiles.com/files/1037274/guguzovekiwu.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://www.daltonmaag.com/In PDF document text
  • https://uploads.strikinglycdn.com/files/338654ec-2399-4218-931c-f40fd15a9298/25871125122.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/4b145290-a419-4ee4-ab61-7047e88c7100/mesorelize.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/7edc1a7b-eeae-4c18-be89-fc63b15f33cd/xukejagavebesijepapef.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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