Check out
http://www.virustotal.com/flash/index_en.html
It is a great service, you email them the file you think may be infected and they scan it with multiple virus scanners and send you the results.
As you can see from the results below only 4 out of 12 scanners found a virus.
Scan results
File: bafaeac.exe
Date: 07/22/2004 11:41:52
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BitDefender 7.0/20040722 found nothing
ClamWin devel-20040719/20040722 found [Worm.Gaobot.IK.2-unp]
eTrustAV-Inoc 4641/20040721 found nothing
F-Prot 3.15/20040721 found nothing
Kaspersky 4.0.2.23/20040722 found nothing
McAfee 4380/20040721 found nothing
NOD32v2 1.819/20040722 found [probably unknown NewHeur_PE]
Norman 5.70.10/20040722 found nothing
Panda 7.02.00/20040722 found nothing
Sybari 7.5.1314/20040722 found [Win32.Agobot.gen]
Symantec 8.0/20040721 found [W32.Gaobot.AFJ]
TrendMicro 7.000/20040719 found nothing