Malicious PDF — malware analysis report

Static analysis result for SHA-256 810e4716716a0cb5…

MALICIOUS

PDF

46.5 KB Created: 2021-06-10 13:50:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 008069b4c5ae7af7b0dd625c619ca66a SHA-1: 28c75ae6f649d25b9b8e725cfe9f14ce1d80709a SHA-256: 810e4716716a0cb5d0a9048f878eb8b69a3219e232e299f1a44850f526899fc5
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, designed to trick users into clicking a link to download game cheats. The embedded URL points to a suspicious domain hosting what appears to be a game hack. The document body and heuristics indicate a social engineering attempt to facilitate a download, likely leading to further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

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/roblox-fly-hack-game-hack
    • http://perpustakaan.stietenggarong.ac.id/repository/what-is-robux_GM431946152.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/youtube-how-to-get-free-robux_GM431946152.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/free-minecraft-pe-server_GM479516143.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/roblox-aimbot-cheat-engine_GM431946152.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/coin-master-free-spins_GM406889139.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/is-there-a-free-version-of-minecraft_GM479516143.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/free-minecraft-texture-packs_GM479516143.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/roblox-free-vip-server_GM431946152.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/pokemon-go-free-movement_GM1094591345.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/coin-master-fan_GM406889139.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/command-hacks-for-roblox_GM431946152.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/how-to-get-free-robux-instantly_GM431946152.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/alone-hacks-in-roblox_GM431946152.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/roblox-studio-free-robux_GM431946152.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/free-spins-on-coin-master-game_GM406889139.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/how-to-hack-roblox-assassin-2021_GM431946152.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/free-roblox-lua-executor_GM431946152.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/free-coins-coin-master-2021_GM406889139.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/rbx-earn_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e0c.bin
d40838caa68512e9e25a5d4d851e64d73884d631fd2f15e2171f6ae923f8a5f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E0C 24276 bytes
font_01_sfnt_off00008566.bin
9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8566 5596 bytes
font_02_sfnt_off0000920e.bin
48aa5298b09ebe1486756ea90f1095ff6b224374f32c9ff4b9ed1390be9ca915		 pdf-font-stream PDF embedded font (sfnt) at offset 0x920E 18528 bytes

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