For the attached pdf file, on the line below where HasNextImage() is called, PdfConverter hangs indefinitely, up to several hours in one case, until I kill execution of my app. I was able to reproduce this consistently. The hanging happens on the second iteration of the while loop.
PdfConverter converter = new PdfConverter();
converter.BindPdf(docPath);
converter.DoConvert();
while (converter.HasNextImage())
{
...
}