Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f4fce23e868f9ab…

MALICIOUS

PDF

35.4 KB Created: 2021-06-28 15:12:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 4ab36b11a242b1ff40d1128aa3021357 SHA-1: c313dfcdf521f01b2d8b4aab0f8ac997814b3070 SHA-256: 9f4fce23e868f9ab03fe50f4ec2223153e617e08189c8aecf0988373e02d6989
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA or human verification prompt to trick users into clicking a link, likely for malicious purposes such as downloading malware or phishing. The embedded URL and document body content strongly suggest a lure related to obtaining free Robux or game cheats. No scripts were extracted, but the PDF structure and embedded URLs indicate a malicious intent to redirect the user to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/how-to-get-free-robux-from-codes-game-hack
    • http://perpustakaan.pa-jember.go.id/repository/cheat-engine-get-free-op-on-roblox_GM431946152.pdf
    • http://perpustakaan.pa-jember.go.id/repository/master-free-spin_GM406889139.pdf
    • http://perpustakaan.pa-jember.go.id/repository/minecraft-multiplayer-free_GM479516143.pdf
    • http://perpustakaan.pa-jember.go.id/repository/is-minecraft-vr-free_GM479516143.pdf
    • http://perpustakaan.pa-jember.go.id/repository/coin-master-34-6-hack_GM406889139.pdf
    • http://perpustakaan.pa-jember.go.id/repository/robux-earning-sites_GM431946152.pdf
    • http://perpustakaan.pa-jember.go.id/repository/coin-master-hack-tool-generator_GM406889139.pdf
    • http://perpustakaan.pa-jember.go.id/repository/how-to-hack-roblox-for-robux_GM431946152.pdf
    • http://perpustakaan.pa-jember.go.id/repository/free-robux-commands_GM431946152.pdf
    • http://perpustakaan.pa-jember.go.id/repository/2-player-cheat-pizza-tycoon-in-roblox_GM431946152.pdf
    • http://perpustakaan.pa-jember.go.id/repository/how-can-i-get-robux_GM431946152.pdf
    • http://perpustakaan.pa-jember.go.id/repository/free-star-wars-clothes-on-roblox_GM431946152.pdf
    • http://perpustakaan.pa-jember.go.id/repository/roblox-hacker-egg_GM431946152.pdf
    • http://perpustakaan.pa-jember.go.id/repository/how-to-hack-roblox-accounts_GM431946152.pdf
    • http://perpustakaan.pa-jember.go.id/repository/how-to-earn-free-spin-in-coin-master_GM406889139.pdf
    • http://perpustakaan.pa-jember.go.id/repository/games-that-give-you-free-robux_GM431946152.pdf
    • http://perpustakaan.pa-jember.go.id/repository/roblox-the-legend-of-the-bone-sword-hacker-rom-code_GM431946152.pdf
    • http://perpustakaan.pa-jember.go.id/repository/coin-master-free-spins_GM406889139.pdf
    • http://perpustakaan.pa-jember.go.id/repository/minecraft-pe-016-0-apk-download-free_GM479516143.pdf
    • http://perpustakaan.pa-jember.go.id/repository/coin-master-links-to-get-free-spins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030a8.bin
3ef02a12c030cc9e80fb865db5fafadd31cad9b0841530dff8aad953b85c5774		 pdf-font-stream PDF embedded font (sfnt) at offset 0x30A8 22968 bytes
font_01_sfnt_off00006410.bin
637bd7b366a995a7daec73d10fe28a9e66f4769e6f71a8cc7896c82adb2c95cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6410 19420 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.