Malicious PDF — malware analysis report

Static analysis result for SHA-256 b92ffd7c6b07583c…

MALICIOUS

PDF

15.6 KB Created: 2021-05-16 17:03:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 81171b842915f77e22c0c1af4f8b9d44 SHA-1: 4d4e20152ce1eaa1fc929321be73f71f5637e28c SHA-256: b92ffd7c6b07583cd1277069eff40598d122edd25772dc3ba5c15980a275d8fb
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users to websites offering game hacks and virtual currency. The primary link, https://netcdn.xyz/app/431946152/free-robux-no-verification-2021-android-game-hack, is flagged as a malicious redirector. The document body and embedded URLs strongly suggest a phishing or scam attempt, likely distributed as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/431946152/free-robux-no-verification-2021-android-game-hack In PDF document text
    • http://www.rezbb.sk/images/free-mod-apk-coin-master_GM406889139.pdfIn PDF document text
    • http://www.rezbb.sk/images/daily-free-spins_GM406889139.pdfIn PDF document text
    • http://www.rezbb.sk/images/free-robux-app-real_GM431946152.pdfIn PDF document text
    • http://www.rezbb.sk/images/coin-master-hack-no-verify_GM406889139.pdfIn PDF document text
    • http://www.rezbb.sk/images/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://www.rezbb.sk/images/give-me-robux-now_GM431946152.pdfIn PDF document text
    • http://www.rezbb.sk/images/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • http://www.rezbb.sk/images/free-robux-site_GM431946152.pdfIn PDF document text
    • http://www.rezbb.sk/images/bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.rezbb.sk/images/coin-master-hack-online-pc_GM406889139.pdfIn PDF document text
    • http://www.rezbb.sk/images/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://www.rezbb.sk/images/roblox-devil_GM431946152.pdfIn PDF document text
    • http://www.rezbb.sk/images/free-robux-picture_GM431946152.pdfIn PDF document text
    • http://www.rezbb.sk/images/earn-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.rezbb.sk/images/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.rezbb.sk/images/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.rezbb.sk/images/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://www.rezbb.sk/images/roblox-adopt-me-free-pets_GM431946152.pdfIn PDF document text
    • http://www.rezbb.sk/images/minecraft-modded-client_GM479516143.pdfIn PDF document text
    • http://www.rezbb.sk/images/free-coins-coin-master_GM406889139.pdfIn PDF document text