I wouldn't call the above URL crafted in any special way
as it was a bounced SPAM mail to the postmaster, but I
believe it could, in theory, be done.
Basically Pine consumed 300 MB of memory upon viewing this
message. It increases slowly and seems to be due to the
HTML rendering code. I've sent this to the PINE maintainers
but haven't had a reply. The only way out is to have
another console kill it.
This is fixed in pine 4.21.