A standard wooden shaft (120 cm) was affixed with a steel spearhead engraved with 8 kB of UTF-8 text. The resulting PDS was thrown at a corkboard target from 10 meters. Document retrieval required extraction tools (pliers).
To understand the weapon, break down its name: Portable Document Spear
Thus, a Portable Document Spear is a malicious PDF file engineered not for mass distribution (like a net), but for surgical precision. It is loaded with interactive elements (JavaScript, forms, embedded fonts, or links) designed to exploit a vulnerability in your PDF reader or trick you into revealing credentials. A standard wooden shaft (120 cm) was affixed
Most PDF readers (Adobe Acrobat, Foxit, Sumatra) support JavaScript for interactivity. Attackers embed malicious JS that triggers upon opening. Thus, a Portable Document Spear is a malicious
If a PDF is a broadsheet—a static, passive container designed to hold everything—the Portable Document Spear is a precision tool. It is a dynamic, hyper-targeted document format designed not to store information, but to deliver a single, actionable point directly into the workflow of the recipient.
The metaphor is intentional. A spear has a single point. It is thrown with intent. It penetrates noise. A Portable Document Spear (or PDS, file extension .spear) strips away the fluff, the boilerplate, and the secondary data, leaving only the "sharp edge" of the information.