Since you are looking for a story related to the Sivapuranam (specifically in the context of a Malayalam PDF update), it is likely you are interested in the background of the text itself, or perhaps a narrative illustrating its power.
Most updated PDFs are organized into different Samhitas (sections) such as: sivapuranam malayalam pdf updated
(narrating the glory of Lord Shiva) or the popular Tamil devotional hymn Sivapuranam (part of Thiruvasagam) translated into Malayalam. Maha Shiva Puranam (The Great Epic) Since you are looking for a story related
Content of Sivapuranam Malayalam PDF