Hi Sunil,
To upload any files to Aspose for Cloud storage, you use storage API and it does not make any difference whether you are using a PDF or DOC/DOCX. Can you please share if you are using a trial account or a paid account? In case of trial account, you can upload/process up to 1MB files.
Please also share your code to upload files and a sample file which is corrupted during upload.
Best Regards,