Testando envio de PDF pelo Evolution GO
Numero: 556599677451
PDF: https://www.w3.org/WAI/ER/tests/xhtml/testfiles/resources/pdf/dummy.pdf
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→ Formato 1: /send/media (mediatype document + url)
   HTTP 404
   Resposta: {"message":"Route POST:/api/errors/not-found not found","error":"Not Found","statusCode":404}

→ Formato 2: /send/document (url)
   HTTP 404
   Resposta: {"message":"Route POST:/api/errors/not-found not found","error":"Not Found","statusCode":404}

→ Formato 3: /send/media (mediaMessage)
   HTTP 404
   Resposta: {"message":"Route POST:/api/errors/not-found not found","error":"Not Found","statusCode":404}

Veja qual formato chegou no WhatsApp e me avise!