Malicious PDF — malware analysis report

Static analysis result for SHA-256 52dfaff7f64cc72f…

MALICIOUS

PDF

34.5 KB Created: 2021-06-18 06:12:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a7461c555f43d13063c672a9349ba67c SHA-1: 00781e7a36001d6aa8a3dd9dcf07710e30ff6550 SHA-256: 52dfaff7f64cc72f7e5d8a21537459e4aa4f6423b2d0110f3550308e3941a05e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains lures for free Robux and includes multiple embedded URLs pointing to potentially malicious content. The heuristic 'SE_CLIPBOARD_COMMAND_LURE' indicates the document may instruct the user to execute commands, likely to download and run a second-stage payload. The ML classifier also 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/free-robux-2021-pastebin-game-hack
    • http://ofthalmiatrosthess.gr/images/roblox-fun-com-free-robux_GM431946152.pdf
    • http://ofthalmiatrosthess.gr/images/body-building-roblox-weightlifting-hack_GM431946152.pdf
    • http://ofthalmiatrosthess.gr/images/roblox-free-clothes-hack_GM431946152.pdf
    • http://ofthalmiatrosthess.gr/images/free-robux-com_GM431946152.pdf
    • http://ofthalmiatrosthess.gr/images/mr-hacks-roblox_GM431946152.pdf
    • http://ofthalmiatrosthess.gr/images/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdf
    • http://ofthalmiatrosthess.gr/images/how-to-really-hack-coin-master_GM406889139.pdf
    • http://ofthalmiatrosthess.gr/images/roblox-island-royale-hack-script_GM431946152.pdf
    • http://ofthalmiatrosthess.gr/images/free-100-robux_GM431946152.pdf
    • http://ofthalmiatrosthess.gr/images/free-rare-cards-for-coin-master-christmas_GM406889139.pdf
    • http://ofthalmiatrosthess.gr/images/free-roblox-gfx_GM431946152.pdf
    • http://ofthalmiatrosthess.gr/images/is-there-a-way-to-get-minecraft-for-free_GM479516143.pdf
    • http://ofthalmiatrosthess.gr/images/free-spin-link-coin-master-today_GM406889139.pdf
    • http://ofthalmiatrosthess.gr/images/free-modded-minecraft-server-hosting_GM479516143.pdf
    • http://ofthalmiatrosthess.gr/images/hack-phamtom-forces-roblox-2021_GM431946152.pdf
    • http://ofthalmiatrosthess.gr/images/minecraft-pe-hack-client_GM479516143.pdf
    • http://ofthalmiatrosthess.gr/images/free-24-7-minecraft-server_GM479516143.pdf
    • http://ofthalmiatrosthess.gr/images/free-robux-no-email_GM431946152.pdf
    • http://ofthalmiatrosthess.gr/images/free-old-roblox-accounts-2021_GM431946152.pdf
    • http://ofthalmiatrosthess.gr/images/how-to-hack-someone-on-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fa7.bin
58a42095b78ac4726fcb57f3711a347c14a369571f06aaee210c718059a887d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA7 22232 bytes
font_01_sfnt_off00006118.bin
3b87547d6627a30d1ff04c5bae65fad13ab64921dd7663b4ade1897d124a4f8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6118 19308 bytes

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