NetApp Filer blocks end user access to .pdf or .doc files. The NetApp Filer log entries list the files as viruses. The Scan Engine logs record these files have a verdict of Decomposer / 27.
Symantec Scan Engine 5.2.x detected a malformity within the container file.
SSE5.2.13 includes updates to the component responsible for extracting archives and other container files. These updated libraries handle the malformity more gracefully so that Scan Engine need not record them as unscannable files. Symantec repaired this issue in SSE5.2.13. Please upgrade to Scan Engine 5.2.13.