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Old 07-11-2007, 11:43 PM   #1
Virus Guy
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Re: New .PDF malware (?)

kurt wismer wrote:

> > How many mass-market PC's (Dell, Gateway, etc) come with
> > Acrobat installed? (just wondering)

>
> how can i explain to you what a stupid question that is?


You are stupid for mis-interpreting it.

> acrobat is a program that *A LOT* of people install after
> getting their computers


No shit sherlock. That's not the answer to my question.

> no, you have to click on it - which people who deal with pdf's
> have been trained to do... i'm sorry if pdf's are foreign to
> you, but that's how people interact with pdf's in the real world


Don't be a smart-ass. The point I'm making is that if you're a
spammer, you want your recipients to see your shit. People are MORE
prone to NOT click on something in e-mail, moreso than they are PRONE
to act like a trained dog and click on an attachment just because it's
a PDF.

> > All the zombies that just spewed that useless e-mail
> > have now been blacklisted on various RBL's.

>
> ???? more misunderstanding... if you blacklisted every domain


RBL's don't black-list domains

> (or even just ip's) with zombies on them you'd wind up
> blacklisting every isp in existence... rbl's don't do
> that because they know it's pointless...


DNSRBL's do exactly that. They blacklist IP addresses. Individual IP
addresses.

> isp's try to stomp out the zombies on their networks


These days, few if any ISP's do that.

> >> and yet ocr spam filters have been effective against
> >> many of those image spam techniques...

> >
> > Can you point to any web-resource that corroborates that
> > statement?

>
>http://www.virusbtn.com/spambulletin...sb200611-image


Interesting page, but I see no examples of slightly-rotated text that
is common in most image spams these days. I'm looking at a recent
spam where the background is multi-hued blue and the text is in red
letters (Discount Pharmacy online) the drug names are in white
(Viagra, Cialis, Ambien, etc) and the prices are in orange-yellow
($2.00 mostly).

As these images comes closer to replicating captcha, the OCR software
will have no chance.
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