>I trust my unzip utility and my pdf viewer just as much as I trust my browser.
The parent commenter is suggesting the random file may be malicious, not that their unzip utility or pdf viewer is untrustworthy.
They are further suggesting that the data contained within the zip could be distributed in a fashion that is less commonly weaponized (PDF is a common attack vector, zip is a common obfuscation method).
>I might have agreed with you 15 years ago, back in the age of antivirus and such.
What does this even mean? You still need antivirus today.
All I use is an adblocker and I've not dealt with malware in over a decade. Turns out if you stay away from shady places on the Web and don't click everything shoved in your face, you can keep a clean machine.
Meanwhile, I know plenty of people WITH antivirus and other shit with utterly compromised and slow shit. We can blame the user behavior instead of the antivirus, naturally, but how do we know the AV is protecting the user and not luring them into a sense of security so that they do risky things?
I might have agreed with you 15 years ago, back in the age of antivirus and such.