In computing, leading/trailing dashes often appear due to:
dhalam does not correspond to a known dictionary word, brand, or software term.
It is likely a randomly generated string, often seen in: -dhalam.info.wmv-
If you visited a compromised .info domain, your browser might have saved a cached object named similarly. This is not a standard media file but could be an exploit payload. In computing, leading/trailing dashes often appear due to: