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2025-05-21 11:03:24 +00:00
parent 66f5c75d1e
commit 58056ce8a4
2 changed files with 56 additions and 32 deletions

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@@ -1,4 +1,11 @@
import re
from collections import Counter
from scipy.stats import entropy
def calculate_url_entropy(url):
counter = Counter(url)
probabilities = [count / len(url) for count in counter.values()]
return entropy(probabilities, base=2)
def extract_url_features(url):
suspicious_words = [
@@ -7,23 +14,25 @@ def extract_url_features(url):
]
return {
'digit_count' : len(re.findall(r'\d', url)),
'dash_count' : url.count('-'),
'underscore_count' : url.count('_'),
'percent_count' : url.count('%'),
'equal_count' : url.count('='),
'question_count' : url.count('?'),
'at_count' : url.count('@'),
'count_of_exclamation' : url.count('!'),
'count_of_dot' : url.count('.'),
'count_of_double_slash' : url.count('//'),
'special_char_count' : len(re.findall(r'[^a-zA-Z0-9]', url)),
'is_ip_in_url' : bool(re.search(r'\b(?:\d{1,3}\.){3}\d{1,3}\b', url)),
'has_www' : 'www' in url,
'suspicious_word_count' : sum(word in url.lower() for word in suspicious_words),
'path_depth' : url.count('/') - 2,
'has_long_digit_sequence' : bool(re.search(r'\d{4,}', url)),
'has_multiple_dash' : bool(re.search(r'-{2,}', url)),
'has_https' : url.startswith('https'),
'ends_with_common_extension' : url.endswith(('.html', '.php'))
'digit_count': len(re.findall(r'\d', url)),
'dash_count': url.count('-'),
'underscore_count': url.count('_'),
'percent_count': url.count('%'),
'equal_count': url.count('='),
'question_count': url.count('?'),
'at_count': url.count('@'),
'count_of_exclamation': url.count('!'),
'count_of_dot': url.count('.'),
'count_of_double_slash': url.count('//'),
'special_char_count': len(re.findall(r'[^a-zA-Z0-9]', url)),
'is_ip_in_url': bool(re.search(r'\b(?:\d{1,3}\.){3}\d{1,3}\b', url)),
'has_www': 'www' in url,
'suspicious_word_count': sum(word in url.lower() for word in suspicious_words),
'path_depth': url.count('/') - 2,
'has_long_digit_sequence': bool(re.search(r'\d{4,}', url)),
'has_multiple_dash': bool(re.search(r'-{2,}', url)),
'has_https': url.startswith('https'),
'ends_with_common_extension': url.endswith(('.html', '.php')),
'url_length': len(url), # ✅ 추가
'url_entropy': calculate_url_entropy(url) # ✅ 추가
}

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@@ -1,39 +1,54 @@
import pandas as pd
import pickle
from tensorflow.keras.models import load_model
from sklearn.metrics import accuracy_score, f1_score, precision_score, recall_score
from Feature import extract_url_features
from collections import Counter
from scipy.stats import entropy
import tensorflow as tf
# 🔹 URL 엔트로피 계산 함수
def calculate_url_entropy(url):
counter = Counter(url)
probabilities = [count / len(url) for count in counter.values()]
return entropy(probabilities, base=2)
# 4. 스케일러 불러오기
# 🔹 스케일러 불러오기
with open("scaler.pkl", "rb") as f:
scaler = pickle.load(f)
# 5. 모델 불러오기
# 🔹 모델 불러오기
model = load_model("best_model.h5")
# 🔹 예측 함수
@tf.function(reduce_retracing=True)
def predict_with_model(model, input_data):
return model(input_data)
# 🔹 입력 URL 받기
url = input("URL입력 : ")
# 🔹 Feature.py에서 피처 추출
features = extract_url_features(url)
input_df = pd.DataFrame([list(features.values())], columns= features.keys())
# 🔹 누락된 피처 보완
features['url_length'] = len(url)
features['url_entropy'] = calculate_url_entropy(url)
# 🔹 데이터프레임 생성 및 정렬
input_df = pd.DataFrame([features])
expected_columns = list(scaler.feature_names_in_)
input_df = input_df[expected_columns]
# 🔹 스케일링
input_scaled = scaler.transform(input_df)
# 🔹 예측
prediction = predict_with_model(model, input_scaled)
score = float(prediction.numpy()[0][0]) # 🔥 정확히 float으로 변환
# 7. 결과 출력
best_threshold = 0.5
if prediction[0][0] > best_threshold:
print('')
# 🔹 출력
threshold = 0.5
if score > threshold:
print(f"악성 (악성일 확률: {score:.4f})")
else:
print('')
print(f"정상 (정상일 확률: {1 - score:.4f})")