Malicious PDF — malware analysis report

Static analysis result for SHA-256 535031b4745fc500…

MALICIOUS

PDF

45.0 KB Created: 2021-06-10 14:38:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 182ea9633eda9f3a6cfd62d81e57ba22 SHA-1: 6d1a3ba7f6d21929c4e2443389a79cfe09bb46e3 SHA-256: 535031b4745fc500055fa159322a8f27250cfe5d4eb523c4a3cd1461ce0ee596
82 Risk Score

Malware Insights

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

The document contains a high-confidence ML classification for maliciousness and includes an external URI pointing to a suspicious download URL. The presence of a 'Password-protected archive handoff' heuristic suggests the document is designed to trick users into believing they need a password to access content, likely to bypass security measures. The embedded URLs and document body content related to games and hacks further support a lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.tw/app/431946152/games-on-roblox-with-free-radios-game-hack
    • http://library.umuslim.ac.id/repository/coin-master-daily-spins-and-coins_GM406889139.pdf
    • http://library.umuslim.ac.id/repository/minecraft-windows-10-edition-hacks_GM479516143.pdf
    • http://library.umuslim.ac.id/repository/how-to-hack-step-by-step-password-pictures-roblox_GM431946152.pdf
    • http://library.umuslim.ac.id/repository/minecraft-mojang-free_GM479516143.pdf
    • http://library.umuslim.ac.id/repository/roblox-how-to-get-free-clothes_GM431946152.pdf
    • http://library.umuslim.ac.id/repository/free-robux-no-generator_GM431946152.pdf
    • http://library.umuslim.ac.id/repository/coin-master-hack_GM406889139.pdf
    • http://library.umuslim.ac.id//repository/mangocheats-com-hack-coin-master-cheat_GM406889139.pdf
    • http://library.umuslim.ac.id//repository/daily-free-spins-and-coins-coin-master_GM406889139.pdf
    • http://library.umuslim.ac.id/repository/open-coin-master_GM406889139.pdf
    • http://library.umuslim.ac.id//repository/free-robux-ad_GM431946152.pdf
    • http://library.umuslim.ac.id/repository/robux-generator-no-human-verification-2021_GM431946152.pdf
    • http://library.umuslim.ac.id/repository/how-to-get-free-robux-codes-2021_GM431946152.pdf
    • http://library.umuslim.ac.id//repository/free-robux-gift-card-codes-2021_GM431946152.pdf
    • http://library.umuslim.ac.id/repository/mcpe_GM479516143.pdf
    • http://library.umuslim.ac.id//repository/coin-master-hack-without-verification-ios_GM406889139.pdf
    • http://library.umuslim.ac.id/repository/coin-master-free-spins-link-quora_GM406889139.pdf
    • http://library.umuslim.ac.id/repository/coin-master-gold-cards-hack-english_GM406889139.pdf
    • http://library.umuslim.ac.id/repository/what-tiktok-free-will_GM835599320.pdf
    • http://library.umuslim.ac.id/repository/free-robux-hack-us_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000524e.bin
201ebe6083729c182dd861f22339fbe2c82bb184d968573ad020e4ceb3dfdac0		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x524E 24768 bytes
font_01_sfnt_off00008a7f.bin
e1afdc03995acf0b3e62f1482c033826e71f2eda5a32b00c15ebbf5999c67669		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A7F 19200 bytes

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