Thanks for your inquiry. Please note that Aspose.Words mimics the same behavior as MS Word do. If you try to open PDF file in MS Word, the PDF contents are loaded as follow. Aspose.Words does the same.
<</Type/Catalog/Pages 2 0 R/Lang(pl-PL) /StructTreeRoot 33 0 R/MarkInfo<</Marked true>>>>…
So, you can not load PDF document into Aspose.Words Document instance correctly. Please read LoadFormat and SaveFormat Enumerations for your kind reference and use Aspose.PDF component for your requirements. You can post such queries at Aspose.PDF forum.
You can work with Text, Images, Stamps, Watermarks, attachments, Bookmarks, Forms, Annotations etc by using Aspose.PDF.
Hope this answers your query. Please let us know if you have any more queries.