Malicious PDF — malware analysis report

Static analysis result for SHA-256 4128459974467a2b…

MALICIOUS

PDF

19.1 KB Created: 2021-06-13 19:12:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 98ffffd2bf5d29b1eb11de7419300283 SHA-1: 1942f06dd6c2c990e50ee383a27c3ed5159dfc2b SHA-256: 4128459974467a2b18b234126d406bb4b2bfa44815d766448b7a6051c932ce53
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users into clicking on what appear to be game-related hacks or generators. One of these links, http://netcdn.co/app/431946152/free-robux-obby-link-in-description-game-hack, is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious document, likely intended to lead users to further malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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 http://netcdn.co/app/431946152/free-robux-obby-link-in-description-game-hack In PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/break-block-roblox-script-hack_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/cheat-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/5-get-unlimited-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/minecraft-free-android_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/mobihack-net-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/how-to-run-roblox-hack-script_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text

Related samples 8

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