Just got a post from CedarDave. The rest of the string ended with .MSI. That indicates Microsoft installer. Not a good sign from an Apple site. I suggested he send the string to Apple.
I am not too sure of the architecture, since I don’t use Apple products.
As I follow the conversation, he plugged an iPhone into a Windows computer and got what purported to be a software update from Apple. If this software update is for iTunes on a Windows PC, isn’t a .msi file what your would expect? I don’t see why plugging in an iPhone would activate a request to update Windows software, however.