I received a text message today. This is a website. I downloaded infow.sisx after I clicked it. What is this?

It is a kind of mobile phone software. I don't know if it is poisonous, but it is certified by Saipan. If the message is not trusted, you don't need to open the software. Generally speaking, it can be deleted directly, but if it is deleted directly, there will still be the registration information of this program (just like uninstalling software on a computer) left on the mobile phone as junk files, so it is best to uninstall it. However, if this software is just an installation package, just delete it.