No...it isn't an aggressive snake at all.
Behavior
By nature, this snake isn’t overly aggressive. They are generally reclusive and can live up to twenty years. These snakes aren’t good climbers, but can manage negotiating small bushes and trees, in the pursuit of a meal. They are, however, good swimmers and can actually swim fairly long distances. Similar to most rattlesnakes, they possess a well-developed rattle that can be heard from quite a distance. On occasion, it has been known to remain silent to allow a predator to pass without being detected. Like most snakes, it would prefer to run than to waste its venom for defense. If cornered, however, the snake will lift its anterior half of its body into the classic S shaped rattlesnake coil. This defense allows the snake to strike a distance approximately a third of its length. It is capable of delivering multiple strikes if necessary.