We have found one software suitable in our database for this conversion.
Microsoft Word documents (.doc, .docx) might be used as a basis for a Microsoft Publisher document (.pub), simply by importing / opening the .doc files in Microsoft Publisher and saving it in PUB format, which essentially represents doc to pub conversion.
This is pretty much the most reliable way to convert doc to pub as 3rd party apps usually have trouble with Publisher files.
DOC
doc file extension is commonly used for text documents created in Microsoft Word word processor prior version 2003. Word's DOC documents can be opened in almost every (if not every) other word processor, such as OpenOffice.org Writer or iWork Pages.
PUB
Files with pub extension are in most cases documents created in Microsoft Publisher, a desktop publishing application from Microsoft Office suite. PUB documents are much more complex than common Word files and give more emphasis to design and page layout, rather than actual text.