This private messages plugin packed with tons of features and settings to take engagement of your website users to the next level with realtime chat features, private video and audio call, group video calls and many other features.
Wp Ajax Private Messages Wordpress Plugin Nulled Script
I just encountered the same issue. After quick analysis I found that this file is allowing remote access of your website to a third party which is pretty much dangerous. This is found in wordpress websites that are using nulled wordpress plugins. This file is being generated from these two files bundled inside nulled plugins: 2ff7e9595c