Trojan found on my macbook pro

Only reference to this trojan I can locate is for Windows (Microsoft), not Mac.

http://www.microsoft.com/security/portal/threat/encyclopedia/entry.aspx?Name=Tro jan%3aSWF%2fRedirector.I

Even if the file was found on your Mac, OS X cannot open .exe files. Windows only.

Uninstall Avast. Use ClamXav. It is free and much better. The trojan redirects web pages. I assume the path in your screenshot was your browser cache. I would clear your cookies and reset your history in your browser, as well. You should be fine.

ClamXav

Trojan:SWF/Redirector.I - Microsoft

No harm is done by deleting cache files infected or otherwise. For all you know Avast may have mis-identified something it thought was a trojan. Furthermore, the trojan itself is one that affects Windows.

Helpful Links Regarding Malware Protection

An excellent link to read is Tom Reed's Mac Malware Guide.

Also, visit The XLab FAQs and read Detecting and avoiding malware and spyware.

See these Apple articles:

Mac OS X Snow Leopard and malware detection

OS X Lion- Protect your Mac from malware

OS X Mountain Lion- Protect your Mac from malware

About file quarantine in OS X

If you require anti-virus protection I recommend using ClamXav.

I assume youre running bootcamp Windows?

swf:redirector

Trojan:SWF/Redirector.H is a Shockwave file that contains specially-formed IFrame tags that point to websites containing malicious content, for example JavaScript containing an exploit for a specific vulnerability. The vulnerability being exploited may vary.

http://www.microsoft.com/security/portal/threat/encyclopedia/entry.aspx?Name=Tro jan%3aSWF%2fRedirector.I

I would recommend none. But if you must then use ClamXAV.

Use ClamXav, see the FAQ for details:

http://www.clamxav.com/faq.php