PDF Creation times out/hangs

Hello, I am having trouble creating a PDF from a word document. When this method is called:

   public FileRef CreatePDF(FileRef sourceFileRef)

   {

       CreatePDFOperation createPDFOperation = CreatePDFOperation.CreateNew();

       createPDFOperation.SetInput(sourceFileRef);

       return createPDFOperation.Execute(_executionContext);

   }

It hangs on the last line (createPDFOperation.Execute), and the operation times out. The executionContext has the correct credentials, and I am able to merge PDFs with the same credentials. As for the sourceFileRef, I am able to write the bytes to a file locally, so the data seems fine. I have attached the test file I am trying to convert.

It may be worth mentioning that this method is located in a common package in a .net project, and hangs when I call it from a web app, but succeeds when I call it from an Azure function. 

Any advice would be appreciated, thanks!