Attacher is an iOS tweak developed by Dany Lisiansky that lets you attatch files to iMessages. Once installed this tweask enables you to attatch any type of file to the iMessage.

Tweak: Attacher | Via :  ModMyi Cydia Repo | Cost : $FREE

Send and Receive any attachment with iMessage 
– Open any received attachment.
– Attach and send any type of file.
– Record and attach voice memos.
– “Listen before attaching” switch in Settings > Attacher.
– Customize voice memo’s name in Settings > Attacher.