Hiding the document name when launching a PDF document

I am launching a pdf document  using either:

1. Response.Redirect("filepath/document.pdf"), or

2. Response.ContentType = "Application/pdf"
    Response.WriteFile("filepath/document.pdf")
    Response.End()

Both methods successfuly launch the PDF document displaying the document path and title in the title bar. For security reasons I'd like to HIDE the document title. Can someone advice how this can be done? (How can a PDF document be launched without showing the actual document's name)
  
 
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