Php file

I have what appears to be an infected php file for a Word-Press web-site.
an on-line scan say that it is infected with: TrojWare.JS.FakejQuery.A

when I try and FTP-download this file to my home computer, Norton 'prevents' the download, siting.
Web Attack: Malicious Javascript Website 16
Web Attack: Mass Iframe Injection Website 24
Web Attack: Malicious JavaScript Redirection 6

question #1, if I turn-off Norton to download this file, will it harm my computer (if I do not execute).??
question #2, what do I look for INSIDE this file, so that I can delete it and cleanup the file..??

 

Ken