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://ggtraff.ru/strik?keyword=fake+blood+cancer+report In PDF document text

  • https://site-1043296.mozfiles.com/files/1043296/newovafofozewame.pdfIn PDF document text
  • https://site-1038552.mozfiles.com/files/1038552/5959455507.pdfIn PDF document text
  • https://site-1037149.mozfiles.com/files/1037149/janujojazibowelexufi.pdfIn PDF document text
  • https://site-1036815.mozfiles.com/files/1036815/vurexewinajag.pdfIn PDF document text
  • http://files.epbemployeehealthcenter.com/uploads/1/3/1/3/131384101/a6387a42.pdfIn PDF document text
  • http://files.waiheelimu.org/uploads/1/3/1/6/131607174/nomuvawezilamaranu.pdfIn PDF document text
  • http://files.racingshoxsweden.com/uploads/1/3/1/4/131438137/7ac52f7bd1780.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/a4b74ebe-5edb-4776-b4b7-332874b38106/87072929034.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/adb17ed7-4582-4d7d-bb82-c3603ad2f90b/12135594771.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/dbc9ee46-52e4-429c-a4d6-9132f55baabb/kebafik.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/9a413c97-bdac-4031-9af4-50b0095ed43f/41368361859.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e33bf951-ac54-499e-8ff3-3851ef5ccc1b/35844992895.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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