Pale Moon forum

These are official download links for the last version. Feel free to grab a copy if you need.

Windows
https://fpdownload.macromedia.com/get/f ... player.exe
https://fpdownload.macromedia.com/get/f ... yer_ax.exe
https://fpdownload.macromedia.com/get/f ... _ppapi.exe

Mac
https://fpdownload.macromedia.com/get/f ... er_osx.dmg
https://fpdownload.macromedia.com/get/f ... _ppapi.dmg

Linux 64bit
https://fpdownload.macromedia.com/get/f ... _64.tar.gz
https://fpdownload.macromedia.com/get/f ... _64.tar.gz

Linux 32bit
https://fpdownload.macromedia.com/get/f ... 386.tar.gz
https://fpdownload.macromedia.com/get/f ... 386.tar.gz

Last version or last non timebombed version? The latter is what's required.

It appears to be the former. I tried changing the URL to the last non-timebombed version and no joy. It might not be available on the official server for download.

Internet archive.com is the best place to find flash players in my experience.