Malicious PDF — malware analysis report

Static analysis result for SHA-256 52c05d155fd78b5a…

MALICIOUS

PDF

34.9 KB Created: 2021-07-01 18:40:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 755fcedf0a10ba73a9bde22a9c691552 SHA-1: 2d5bf85ec9c33e273c24f8566120bd775d823706 SHA-256: 52c05d155fd78b5a3ec5a9947df3a24028dfb9feebe29bcf063787dbf20b0556
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The document presents itself as a free game hack or cheat, likely a lure to trick users into downloading a malicious payload from the embedded URLs. The heuristic 'SE_CLIPBOARD_COMMAND_LURE' indicates the document instructs the user to copy and paste content into a command-line interface, suggesting an attempt to execute downloaded malware. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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/muscle-roblox-manequin-free-game-hack
    • http://niceviaapia.com.br/images/ckfinder/files/roblox-finak-stand-cheat_GM431946152.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/roblox-how-to-get-any-gamepass-for-free-2021_GM431946152.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/minecraft-for-chromebook-free_GM479516143.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/hacks-para-infinity-anime-roblox_GM431946152.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/how-to-get-robux-free-on-roblox-2021_GM431946152.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/roblox-dragon-riders-hack_GM431946152.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/free-robux-android_GM431946152.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/roblox-free-items-glitch_GM431946152.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/how-to-get-free-stuff-on-roblox_GM431946152.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/how-to-change-username-on-roblox-for-free_GM431946152.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/free-robux-websites-no-human-verification_GM431946152.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/coin-master-links-for-free-spins-2021_GM406889139.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/robux-for-offers_GM431946152.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/master-free-spin-and-coin-links-html-m-1_GM406889139.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/how-to-hack-pokemon-brick-bronze-roblox_GM431946152.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/how-can-i-get-robux_GM431946152.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/robuxlove-net-free-robux_GM431946152.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/how-to-get-free-bc-on-roblox-no-hack_GM431946152.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/spin-coin-master-free_GM406889139.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/tiktok-like-bot-free_GM835599320.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000303e.bin
3be77e52368a7f33700892ffa94a7810bc2700c9f936f1d4a84a1e60f98142b0
pdf-font-stream PDF embedded font (sfnt) at offset 0x303E 22676 bytes
font_01_sfnt_off000062e2.bin
a94c9bea239e280da50fb5bdd7415d40e7b3a441fc251e52879e08222d04e136
pdf-font-stream PDF embedded font (sfnt) at offset 0x62E2 19276 bytes