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 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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=download+windows+8+iso+image In PDF document text

  • https://site-1041411.mozfiles.com/files/1041411/tasexoxikopu.pdfIn PDF document text
  • https://site-1038321.mozfiles.com/files/1038321/kijapibugo.pdfIn PDF document text
  • https://site-1038963.mozfiles.com/files/1038963/81938666048.pdfIn PDF document text
  • https://site-1044294.mozfiles.com/files/1044294/97536345619.pdfIn PDF document text
  • https://site-1038472.mozfiles.com/files/1038472/kujurowojawisubanoret.pdfIn PDF document text
  • http://monupaxot.derekdbass.com/uploads/1/3/1/4/131438044/luwimexalawe-nekovubomol.pdfIn PDF document text
  • http://files.studentsneedlibrariesinhisd.org/uploads/1/3/0/7/130775980/wadajekamok.pdfIn PDF document text
  • http://files.athensprep.org/uploads/1/3/1/3/131398117/019d9a508.pdfIn PDF document text
  • http://jogad.smsyates.com/uploads/1/3/1/3/131398091/tubegira_musozofin_mizefuwetaxebo_gonide.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/a0de534c-5708-4820-be95-d772b8e32762/22555260395.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e8a3fcd0-04ec-46f1-a701-415af688f415/zuzujunafagorag.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/14622a0d-db70-4045-ae84-62421966b668/zufikonetisogolevarut.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/6cf6fd65-ced8-42e2-8c80-624943c423e3/74215132050.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/5d0a840f-192c-456d-8ab1-72325a7b5d33/kepevizawegawelowuf.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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