The attached file has another document attached as an altchunk with embedded ole objects. it has has html altchunks within content controls.
Word 2013 can save as PDF but Aspose.Words cannot convert to PDF.
Thanks for your inquiry.
While using the latest version of Aspose.Words i.e. 15.4.0, we managed to reproduce Aspose.Words.FileCorruptedException on our end. We have logged this issue in our bug tracking system. The ID of this issue is WORDSNET-11945. Your thread has also been linked to the appropriate issue and you will be notified as soon as it is resolved. Sorry for the inconvenience.