Malicious PDF — malware analysis report

Static analysis result for SHA-256 80e410b511fd12e3…

MALICIOUS

PDF

45.1 KB Created: 2021-05-12 10:38:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 55f622e33857be30f26724e867505eea SHA-1: ab0f0bf4d731e93629289987584875cb6e93834f SHA-256: 80e410b511fd12e30979b966d476b9292548947bb9a7b8ef1f31a047a1642460
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded URLs and a document body that promotes free Robux and game hacks, acting as a lure. Heuristics indicate it's a browser installation lure, suggesting the user is prompted to install a malicious extension or update. The primary malicious URL identified is https://netcdn.xyz/app/431946152/free-robux-redeem-codes-2021-game-hack, which likely serves the secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-redeem-codes-2021-game-hack
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/minecraft-hack-mod_GM479516143.pdf
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/how-do-u-hack-roblox_GM431946152.pdf
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdf
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/daily-free-spins-on-coin-master_GM406889139.pdf
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/coin-master-daily-bonus-hack_GM406889139.pdf
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/get-robux-today_GM431946152.pdf
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/how-to-get-robux-easy_GM431946152.pdf
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/free-old-roblox-accounts_GM431946152.pdf
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/minecraft-java-free-trial_GM479516143.pdf
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/hack-coin-master-32-mod-apk_GM406889139.pdf
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-facebook_GM406889139.pdf
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/minecraft-free-minecraft_GM479516143.pdf
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-coin_GM406889139.pdf
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/minecraft-diamond-finder-hack_GM479516143.pdf
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/free-minecraft-skins-xbox-one_GM479516143.pdf
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/coin-master-hack-ios-jailbreak_GM406889139.pdf
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/202100-free-spins-coin-master_GM406889139.pdf
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/roblox-free-pants_GM431946152.pdf
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-today_GM406889139.pdf
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/roblox-hack-client_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004e62.bin
ee3546fa06951d26919b54ca5281467335f903b08fe8ba47a4fec0b800c37296		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E62 26808 bytes
font_01_sfnt_off00008c35.bin
835008e062f354a08c5cd285c30dce0b291468b55589a8f36d5d300bab70ed7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C35 18852 bytes

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