super_secret.exe?

[Botklid]

Not so long time ago I bought ‘’Penumbra’’ game, localized by Snowball (this means I’m Russian), it’s a very good dvd-disk which contains all 3 Penumbra games in the main folder I have found file called ‘’super_secret.exe’’ I wanted open it and look what’s inside but the file had password, so I’m going to ask whether it’s created by Frictional Games or it’s an eastern-egg by Snowball, I’m really wondering about this file because it has pretty interesting name and it’s rather big(79mb).
And yes if this forum already had such thread please don’t blame be too hard, I’m new
PS: here is the screenshot!

***image loads slow for foreign country becuase its uploaded ru, i cant open imageshack.us :O***