Wordfence identifying wp-addpub malware

I am rebuilding a site that was using wp-addpub, so I installed wp-addpub, then imported content from the other site. Wordfence then alerted me that it detected malware in wp-addpub. Is this a known false positive, or is it possible that content imported from the old site into the new site contains malware? I have not used wp-addpub before, so I am unfamiliar with the most efficient way to determine the cause of the Wordfence alert.

http://wordpress.org/plugins/wp-addpub/