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Feature_extraction.py
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Feature_extraction.py
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from urlparse import urlparse
import re
import urllib
import urllib2
from xml.dom import minidom
import csv
import pygeoip as pygeoip
opener = urllib2.build_opener()
opener.addheaders = [('User-agent', 'Mozilla/5.0')]
print(opener)
nf = -1
def Tokenise(url):
if url == '':
return [0, 0, 0]
token_word = re.split('\W+', url)
# print token_word
no_ele = sum_len = largest = 0
for ele in token_word:
l = len(ele)
sum_len += l
if l > 0: ## for empty element exclusion in average length
no_ele += 1
if largest < l:
largest = l
try:
return [float(sum_len) / no_ele, no_ele, largest]
except:
return [0, no_ele, largest]
def find_ele_with_attribute(dom, ele, attribute):
for subelement in dom.getElementsByTagName(ele):
if subelement.hasAttribute(attribute):
return subelement.attributes[attribute].value
return nf
def sitepopularity(host):
xmlpath = 'http://data.alexa.com/data?cli=10&dat=snbamz&url=' + host
# print xmlpath
try:
xml = urllib.urlopen(xmlpath)
dom = minidom.parse(xml)
rank_host = find_ele_with_attribute(dom, 'REACH', 'RANK')
# country=find_ele_with_attribute(dom,'REACH','RANK')
rank_country = find_ele_with_attribute(dom, 'COUNTRY', 'RANK')
return [rank_host, rank_country]
except:
return [nf, nf]
def Security_sensitive(tokens_words):
sec_sen_words = ['confirm', 'account', 'banking', 'secure', 'ebayisapi', 'webscr', 'login', 'signin']
cnt = 0
for ele in sec_sen_words:
if (ele in tokens_words):
cnt += 1;
return cnt
def exe_in_url(url):
if url.find('.exe') != -1:
return 1
return 0
def Check_IPaddress(tokens_words):
cnt = 0;
for ele in tokens_words:
if unicode(ele).isnumeric():
cnt += 1
else:
if cnt >= 4:
return 1
else:
cnt = 0;
if cnt >= 4:
return 1
return 0
def getASN(host):
try:
g = pygeoip.GeoIP('GeoIPASNum.dat')
asn = int(g.org_by_name(host).split()[0][2:])
return asn
except:
return nf
'''def web_content_features(url):
wfeatures={}
total_cnt=0
try:
source_code = str(opener.open(url))
#print source_code[:500]
wfeatures['src_html_cnt']=source_code.count('<html')
wfeatures['src_hlink_cnt']=source_code.count('<a href=')
wfeatures['src_iframe_cnt']=source_code.count('<iframe')
#suspicioussrc_ javascript functions count
wfeatures['src_eval_cnt']=source_code.count('eval(')
wfeatures['src_escape_cnt']=source_code.count('escape(')
wfeatures['src_link_cnt']=source_code.count('link(')
wfeatures['src_underescape_cnt']=source_code.count('underescape(')
wfeatures['src_exec_cnt']=source_code.count('exec(')
wfeatures['src_search_cnt']=source_code.count('search(')
for key in wfeatures:
if(key!='src_html_cnt' and key!='src_hlink_cnt' and key!='src_iframe_cnt'):
total_cnt+=wfeatures[key]
wfeatures['src_total_jfun_cnt']=total_cnt
except Exception, e:
print "Error"+str(e)+" in downloading page "+url
default_val=nf
wfeatures['src_html_cnt']=default_val
wfeatures['src_hlink_cnt']=default_val
wfeatures['src_iframe_cnt']=default_val
wfeatures['src_eval_cnt']=default_val
wfeatures['src_escape_cnt']=default_val
wfeatures['src_link_cnt']=default_val
wfeatures['src_underescape_cnt']=default_val
wfeatures['src_exec_cnt']=default_val
wfeatures['src_search_cnt']=default_val
wfeatures['src_total_jfun_cnt']=default_val
return wfeatures'''
def safebrowsing(url):
api_key = "ABQIAAAA8C6Tfr7tocAe04vXo5uYqRTEYoRzLFR0-nQ3fRl5qJUqcubbrw"
name = "URL_check"
ver = "1.0"
req = {}
req["client"] = name
req["apikey"] = api_key
req["appver"] = ver
req["pver"] = "3.0"
req["url"] = url # change to check type of url
try:
params = urllib.urlencode(req)
req_url = "https://sb-ssl.google.com/safebrowsing/api/lookup?" + params
res = urllib.request.urlopen(req_url)
# print res.code
# print res.read()
if res.code == 204:
print
"safe"
return 0
elif res.code == 200:
print
"The queried URL is either phishing, malware or both, see the response body for the specific type."
return 1
elif res.code == 204:
print
"The requested URL is legitimate, no response body returned."
elif res.code == 400:
print
"Bad Request The HTTP request was not correctly formed."
elif res.code == 401:
print
"Not Authorized The apikey is not authorized"
else:
print
"Service Unavailable The server cannot handle the request. Besides the normal server failures, it could also indicate that the client has been throttled by sending too many requests"
except:
return -1
def feature_extract(url_input):
Feature = {}
tokens_words = re.split('\W+', url_input) # Extract bag of words stings delimited by (.,/,?,,=,-,_)
# print tokens_words,len(tokens_words)
# token_delimit1=re.split('[./?=-_]',url_input)
# print token_delimit1,len(token_delimit1)
obj = urlparse(url_input)
host = obj.netloc
path = obj.path
Feature['URL'] = url_input
Feature['rank_host'], Feature['rank_country'] = sitepopularity(host)
Feature['host'] = obj.netloc
Feature['path'] = obj.path
Feature['Length_of_url'] = len(url_input)
Feature['Length_of_host'] = len(host)
Feature['No_of_dots'] = url_input.count('.')
Feature['avg_token_length'], Feature['token_count'], Feature['largest_token'] = Tokenise(url_input)
Feature['avg_domain_token_length'], Feature['domain_token_count'], Feature['largest_domain'] = Tokenise(host)
Feature['avg_path_token'], Feature['path_token_count'], Feature['largest_path'] = Tokenise(path)
Feature['sec_sen_word_cnt'] = Security_sensitive(tokens_words)
Feature['IPaddress_presence'] = Check_IPaddress(tokens_words)
print
host
print
getASN(host)
Feature['exe_in_url'] = exe_in_url(url_input)
Feature['ASNno'] = getASN(host)
Feature['safebrowsing'] = safebrowsing(url_input)
"""wfeatures=web_content_features(url_input)
for key in wfeatures:
Feature[key]=wfeatures[key]
"""
# debug
# for key in Feature:
# print key +':'+str(Feature[key])
print(Feature)
return Feature
print("feature extraction is running.......")