Malicious PDF — malware analysis report

Static analysis result for SHA-256 10bc69a0800ba67b…

MALICIOUS

PDF

46.9 KB Created: 2021-06-11 01:39:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: b330123949fa3608ca52849ccc350e5f SHA-1: 1e5a963d3daa61296338a92797b6d4ab121d7c0c SHA-256: 10bc69a0800ba67bb9f67b362b6d1908c7b291e6ca325d8ebd551eb8566a93db
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a fake CAPTCHA lure, designed to trick users into interacting with it. It also embeds a URL that points to a resource related to game hacking, suggesting a social engineering pretext. The ML classifier also flagged this PDF as malicious with a high probability.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

Heuristics 4

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/bypassed-cheat-engine-roblox-game-hack
    • http://pustaka.pn-calang.go.id/repository/how-to-get-minecraft-for-free_GM479516143.pdf
    • http://www.pustaka.pn-calang.go.id/repository/roblox-build-a-boat-for-trasure-fly-hack_GM431946152.pdf
    • http://www.pustaka.pn-calang.go.id/repository/free-minecraft-skins-xbox-one_GM479516143.pdf
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-hack-spins-free_GM406889139.pdf
    • http://www.pustaka.pn-calang.go.id/repository/how-to-get-free-pets-on-roblox-adopt-me_GM431946152.pdf
    • http://pustaka.pn-calang.go.id/repository/free-spin-in-coin-master_GM406889139.pdf
    • http://www.pustaka.pn-calang.go.id/repository/robux-hack-free-robux_GM431946152.pdf
    • http://www.pustaka.pn-calang.go.id/repository/how-to-get-free-robux-fast-and-easy_GM431946152.pdf
    • http://www.pustaka.pn-calang.go.id/repository/blogger-free-spins-and-coins_GM406889139.pdf
    • http://pustaka.pn-calang.go.id/repository/do-you-get-minecraft-windows-10-for-free_GM479516143.pdf
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-free-spins-8-14-2021_GM406889139.pdf
    • http://www.pustaka.pn-calang.go.id/repository/spin-free-coin-master_GM406889139.pdf
    • http://www.pustaka.pn-calang.go.id/repository/roblox-free-pets-in-pet-simulator_GM431946152.pdf
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-daily-free-spins-link-today-2021_GM406889139.pdf
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-daily-free-spin-and-coin_GM406889139.pdf
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-free-spins-haktuts_GM406889139.pdf
    • http://pustaka.pn-calang.go.id/repository/roblox-script-hack_GM431946152.pdf
    • http://www.pustaka.pn-calang.go.id/repository/how-to-hack-on-vehicle-simulator-roblox_GM431946152.pdf
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-game-hack-link_GM406889139.pdf
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-free-spins-ios_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000526a.bin
d18c1d780026a8d4346e7069e3c887a469b3504fbee81418a11454a9ee032586		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x526A 27528 bytes
font_01_sfnt_off000091c7.bin
47c5b510243aa456c05a44942a9507e71fd1c7b77a0b3268b8eac3ade0ab2b97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91C7 19220 bytes

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