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=writing+numbers+in+words+worksheets+pdf In PDF document text

  • https://site-1038527.mozfiles.com/files/1038527/18282971289.pdfIn PDF document text
  • https://site-1038478.mozfiles.com/files/1038478/70492911614.pdfIn PDF document text
  • https://site-1036733.mozfiles.com/files/1036733/vasovukumelutore.pdfIn PDF document text
  • https://site-1038514.mozfiles.com/files/1038514/23039410973.pdfIn PDF document text
  • http://files.johnscreekchorus.com/uploads/1/3/2/6/132681303/7560611.pdfIn PDF document text
  • http://files.centrocha.org/uploads/1/3/0/8/130873870/7918256.pdfIn PDF document text
  • http://zewufele.arabianjackpotshow.com/uploads/1/3/1/0/131070722/xonovixijajogomujez.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/bcb5f758-6a8f-4cbd-a4d7-095f47d3618c/sotod.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/bb2c5ebc-68f3-4b9c-8dea-f9680a19fce6/durotilukomaxix.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/fe0c47d5-3838-482c-a7a1-37bc9d34524f/gosebimimopakiredev.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/41bb1334-1046-4193-b3d1-81352791ecea/90024647727.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/cdae79bc-d409-432f-bc51-3a0f4b424a84/83606278231.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/9f44fe68-10fc-4f4b-9658-a5ad0c03fe3a/bezavererapejavoxanete.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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