This app is part of the seed and there aren't found similar apps on marketplaces

MD5	Package Name	Fingerprint	Source	Detection date
6c6cdda69673651b78725027ba32dc55	facebook.messenger.facebookmessenger.facebook.messenger.social.free.app.top.facebook.messenger.wechat.facebookmessenger	755E2FC3105FAAE6ED019C8A5B438EFF	virustotal	2015-04-08