It needs a .php file to work property. You'd need to either find whatever website this originally came from, see if archive.org saved it and then maybe modify it to work on a local webserver if necessary, or reverse engineer what the swf wants from scratch. I also took a quick look through JPEXS and I think all it does is add cum stains to a picture? You could easily extract the assets and then put them on the picture yourself if you wanted to.