Trojan.Malscript is a heuristic detection for Web-based malicious script files that exploit vulnerabilities and/or perform heap spraying.
Files that are detected as Trojan.Malscript are considered malicious. We suggest that any files you believe are incorrectly detected be submitted to Symantec Security Response. For instructions on how to do this using Scan and Deliver, read Submit Virus Samples
Symantec Security Response encourages all users and administrators to adhere to the following basic security "best practices":