I saw that someone else asked the same question at superuser: https://superuser.com/questions/1008170/whats-the-498731-padl-file-for but there was no helpful answer so I'm trying here hoping to have more luck.
Like my tag implies, I am not on Windows. I don't share directories over LDAP either.
Edit: Inspecting the file with plutil -p
gives the following output:
{
"$archiver" => "NSKeyedArchiver"
"$objects" => [
0 => "$null"
1 => {
"$class" => <CFKeyedArchiverUID 0x7febc05086e0 [0x7fff9011eb60]>{value = 4}
"NS.keys" => [
0 => <CFKeyedArchiverUID 0x7febc05085e0 [0x7fff9011eb60]>{value = 2}
]
"NS.objects" => [
0 => <CFKeyedArchiverUID 0x7febc0508680 [0x7fff9011eb60]>{value = 3}
]
}
2 => "PaddleT"
3 => 1563322503.507701
4 => {
"$classes" => [
0 => "NSDictionary"
1 => "NSObject"
]
"$classname" => "NSDictionary"
}
]
"$top" => {
"root" => <CFKeyedArchiverUID 0x7febc05089c0 [0x7fff9011eb60]>{value = 1}
}
"$version" => 100000
}
Best Answer
Like any hidden files, it’s quite safe to do the following since if you don’t know what it does, the chance even a well intentioned person on the internet knows your setup or needs better than you are low. Better to be safe and free to experiment is my motto.
Now you have a line in the sand, escape plan and will know if the file is recreated again the exact date/time it came into existence. What you’re seeing here is a data dump of ObjectiveC data from a program or script.