I am working on implementing a process that sends a copy of an electronic document to a SFTP location when an employee files a specific document.

Currently, the employee runs a business process, that applies the proper security tags, and routes the document appropriately within the repository to its final location. We have a business need for the document (MS Word) to be also sent to an in-house app for additional processing. 

Initially, the concept would be to insert a "Script" task in the existing workflow, to call an SFTP session and send the electronic document over. 

I am looking for a near-vanilla solution to this. Since WF does not directly have a built-in FTP/SFTP protocol, I have installed PSFTP on our server to handle the connection. 

However, I seem to be stuck at actually sending the electronic document to PSFTP for transfer.

Can this be done without the SDK, or qFiche's FTP add-on?