From: Ant on
"Virus Guy" wrote:

> I have Firefox (2.0.0.20) [...]

Maybe that version is buggy.

> I was fooling around with some links at malwaredomainlist.com and one
> (or more) of those links, when executed in Firefox, resulted in Acrobat
> reader opening and (I guess) trying to render some file. The "save to
> file" dialog box did not happen. My Firefox agent string is been set to
> OS=XP, Firefox= 3.1.something (I'm running win-98).
>
> I'm trying to figure out what or how or why acrobat reader was launched
> by what-ever I was pointing Firefox at.

Until we know which link and can examine what comes back with your
particular UA header it's all guesswork.

> The pdf file that I posted about in another thread came from my firefox
> cache at about the same time that I was messing with those malwardomain
> url's. The only PDF files that I've seen in the past that are very
> small and have script code in them like that were usually malware.

There was no script in the sample you posted.


From: Ant on
"Virus Guy" wrote:

> Ant wrote:
>> I suspect VG means Javascript.
>
> What sub-system is responsible for handling / executing Javascript?

DLL(s) supplied with the browser or in the case of IE, with the OS.

> Is there anything like a single Javascript "control-panel" - or engine?

No. Firefox has some configuration options but IE has more.

> Or does every app handle Javascript internally - all by itself?

Yes.