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While the user previews the file, the system runs a multi-engine virus scan and checks the file's metadata against known malicious domains.
It generates a flattened, non-interactive version of the PDF. Users can read the content without the risk of an embedded "phone home" command or credential-stealing exploit executing.
Instead of a direct download, this feature triggers an that strips active scripts and hidden macros before the file ever touches the user’s local storage.