Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0dd24309679d376…

MALICIOUS

PDF

34.0 KB Created: 2021-06-20 09:58:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9b0dfe2e6cea651d60d6e37a32353c3b SHA-1: c935eb620e0134df93617f439390e8c747894e24 SHA-256: c0dd24309679d3768f2983376c712a958e17d1d1978a4fa80495bab52be37612
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links and text referencing game "hacks" and "free Robux", indicating a lure for users to download potentially malicious files. The presence of 'cmd-hacks-game-hack' and related URLs suggests an attempt to exploit user interest in game cheating to deliver malware. No scripts were extracted, but the document's structure and embedded URLs strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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/roblox-cmd-hacks-game-hack
    • http://www.biochemix.com/uploaded_files/userfiles/files/hacks-minecraft_GM479516143.pdf
    • http://www.biochemix.com/uploaded_files/userfiles/files/hacker-de-robux-para-roblox-2021_GM431946152.pdf
    • http://www.biochemix.com/uploaded_files/userfiles/files/roblox-hack-robux-gratis_GM431946152.pdf
    • http://www.biochemix.com/uploaded_files/userfiles/files/free-thumbnails-roblox-game_GM431946152.pdf
    • http://www.biochemix.com/uploaded_files/userfiles/files/can-you-give-me-free-robux_GM431946152.pdf
    • http://www.biochemix.com/uploaded_files/userfiles/files/coin-master-free-spins-promo-code_GM406889139.pdf
    • http://www.biochemix.com/uploaded_files/userfiles/files/free-robux-glitch-2021_GM431946152.pdf
    • http://www.biochemix.com/uploaded_files/userfiles/files/how-to-get-free-spins-in-coin-master_GM406889139.pdf
    • http://www.biochemix.com/uploaded_files/userfiles/files/minecraft-dungeons-free_GM479516143.pdf
    • http://www.biochemix.com/uploaded_files/userfiles/files/new-roblox-exploit-hack-proxo_GM431946152.pdf
    • http://www.biochemix.com/uploaded_files/userfiles/files/free-robux-websites-2021_GM431946152.pdf
    • http://www.biochemix.com/uploaded_files/userfiles/files/how-to-get-someones-roblox-password-for-free-2021_GM431946152.pdf
    • http://www.biochemix.com/uploaded_files/userfiles/files/how-to-use-synapes-roblox-hack_GM431946152.pdf
    • http://www.biochemix.com/uploaded_files/userfiles/files/free-roblox-games-for-geust_GM431946152.pdf
    • http://www.biochemix.com/uploaded_files/userfiles/files/is-roblox-studio-free_GM431946152.pdf
    • http://www.biochemix.com/uploaded_files/userfiles/files/roblox-help-free-robux_GM431946152.pdf
    • http://www.biochemix.com/uploaded_files/userfiles/files/coin-master-free-coins-and-spins-2021_GM406889139.pdf
    • http://www.biochemix.com/uploaded_files/userfiles/files/how-to-hack-coin-master-facebook_GM406889139.pdf
    • http://www.biochemix.com/uploaded_files/userfiles/files/roblox-free-clothes-hack_GM431946152.pdf
    • http://www.biochemix.com/uploaded_files/userfiles/files/how-to-get-verified-on-tiktok-for-free_GM835599320.pdf
    • http://netcdn.co/app/431946152/roblox-cm
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ff2.bin
624750b51a4261b4de7b4261496b455bbafcb26ca697d164dbfa72c615567242		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FF2 21792 bytes
font_01_sfnt_off00005fc4.bin
528b486b939350902aae676445d7e7a4af39f51406cc47f7167705f53401052d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC4 19092 bytes

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