Android installer for an app store named Ant Market, version 1.2.3, labelled as the official build and about 8.65 MB. Alternative app markets like this are often installed on Chinese TV boxes and tablets that ship without Google Play. The file has no repair data such as schematics or dumps. Install it with ADB or a file manager after allowing unknown sources, and scan the package first, because third-party stores can install further software without much oversight.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @tv_software. Enginerys does not host this file.