WS. Trojan. H Exonerated and Suspicious cloud

I recently downloaded a PDF file and my antivirus has starting changing its settings, turning itself off. When I scan it everything comes back clean but in the security history I get this:

Category: Norton Community Watch
Date & Time,Risk,Activity,Status,Recommended Action,Date Updated,Submitted By,Description,Submission Details
2012-09-03 18:09:20,Info,Statistical Submission: Suspicious.Cloud.7.F Exonerated,Pending,No Action Required,2012-09-03 18:09:20,Norton Security Suite,Statistical Submission: Suspicious.Cloud.7.F Exonerated,"______ <br>Detection Digest: <br>03 00 EA AF 0F 01 00 02 00 00 00 00 00 52 2B F7 .............R+. <br>F7 B4 F8 08 7D 00 00 00 00 4E 07 00 2A 04 03 00 ....}....N..*... <br>00 32 19 03 06 00 01 02 03 00 00 00 .2.......... <br>"

 

and I get this:

Category: Norton Community Watch
Date & Time,Risk,Activity,Status,Recommended Action,Date Updated,Submitted By,Description,Submission Details
2012-09-03 17:23:07,Info,Statistical Submission: Suspicious.Cloud.7.F Exonerated,Pending,No Action Required,2012-09-03 17:23:07,Norton Security Suite,Statistical Submission: Suspicious.Cloud.7.F Exonerated,"_________ <br>Detection Digest: <br>03 00 EA AF 0F 01 00 02 00 00 00 00 00 BD 03 43 ...............C <br>32 95 8B 2E 6F 00 00 00 00 D9 BD 1D 8A 04 03 00 2...o........... <br>00 32 19 03 06 00 01 02 03 00 00 00 .2.......... <br>"

 

 

I get these over and over. and activity also shows an incoming connection in isp address 127.0.0.0. I know this means my own computer but it never did this before. Please help as I have no idea what to do.