Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d0a2e50aa46f986…

MALICIOUS

PDF

45.6 KB Created: 2021-06-07 12:54:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9426f957d3e178650955533cb9061e3f SHA-1: d63e152dbbcede752e90fdb0153ed2004c92dee5 SHA-256: 5d0a2e50aa46f986af16c64b69f3208ba65bdbcea4fa1ae244f9de5e70874ccb
82 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs pointing to sites offering game hacks and exploits, indicating a lure for users to download potentially malicious content. The heuristic 'SE_LOLBIN_RUN_COMMAND' suggests the document may attempt to execute commands, possibly via embedded scripts or by referencing command-line tools, to facilitate the download or execution of further payloads. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.tw/app/431946152/how-to-hack-someones-account-on-roblox-july-2021-game-hack
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/free-tiktok-likes-2021_GM835599320.pdf
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/roblox-hack-download-robux-2021_GM431946152.pdf
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/how-to-get-free-robux-by-calling-roblox_GM431946152.pdf
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/how-to-get-free-robux-using-cmd_GM431946152.pdf
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/free-minecraft-accounts-2021_GM479516143.pdf
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/rexex-free-robux_GM431946152.pdf
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/minecraft-bedrock-hacks_GM479516143.pdf
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/friendly-face-free-robloxpgn_GM431946152.pdf
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/roblox-promo-codes-free-robux_GM431946152.pdf
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/robux-free-2021_GM431946152.pdf
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/free-tiktok-accounts_GM835599320.pdf
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/how-to-hack-peoples-roblox-accounts_GM431946152.pdf
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/free-roblox-accounts-20212021_GM431946152.pdf
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/free-tiktok-followers-no-human-verification-or-survey_GM835599320.pdf
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/cheats-for-good-hair-on-roblox_GM431946152.pdf
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/how-to-get-free-robux-without-verification-2021_GM431946152.pdf
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdf
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/robux-free-illimited_GM431946152.pdf
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/tiktok-views-free_GM835599320.pdf
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/ways-to-get-free-robux_GM431946152.pdf
    • http://thinkpro.ca/wp-content/uploads/fs
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050ba.bin
8c6e388af5a66577f99c19af62f65eaaafd25aa8be1dfe5081d51fbd07803a10		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50BA 25400 bytes
font_01_sfnt_off00008b88.bin
f81cb5876d8414cab52c723b93f2ba2a653454e89cd36727871e2716d69d624b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B88 19596 bytes

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