Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d03b7bfa04b0b50…

MALICIOUS

PDF

46.4 KB Created: 2021-06-11 04:31:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 697cdcdc6ade5a948e04548a9258fcfb SHA-1: 5871da838bf5cd30f0d89a95cdb0468beef1bb03 SHA-256: 8d03b7bfa04b0b50b5e9934d7f8e870e0cb2cc2d5b877c41fcc3d29414b42d79
82 Risk Score

Malware Insights

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

The PDF document contains lures related to game hacks and free items, directing users to external URLs for downloads. The presence of a 'Clipboard command execution lure' heuristic indicates the document likely instructs users to copy and paste content into a command-line interface, potentially to execute downloaded payloads. No scripts were extracted, but the overall pattern suggests a downloader or exploit delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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 https://netcdn.tw/app/431946152/inside-the-world-of-roblox-pdf-free-download-game-hack
    • https://bibliopolis.be/wp-content/uploads/fsqm-files/minecraft-hacks_GM479516143.pdf
    • https://bibliopolis.be/wp-content/uploads/fsqm-files/free-show-rules-for-free-robux-on-roblox_GM431946152.pdf
    • https://bibliopolis.be/wp-content/uploads/fsqm-files/free-tiktok-likes-no-human-verification-or-download_GM835599320.pdf
    • https://bibliopolis.be/wp-content/uploads/fsqm-files/how-to-get-free-money-in-roblox-vehicle-simulator-2021_GM431946152.pdf
    • https://bibliopolis.be/wp-content/uploads/fsqm-files/can-i-download-roblox-for-free-right-now_GM431946152.pdf
    • https://bibliopolis.be/wp-content/uploads/fsqm-files/roblox-cheat-engine-forcefield_GM431946152.pdf
    • https://bibliopolis.be/wp-content/uploads/fsqm-files/aimbot-hack-in-roblox_GM431946152.pdf
    • https://bibliopolis.be/wp-content/uploads/fsqm-files/roblox-pants-black-free_GM431946152.pdf
    • https://bibliopolis.be/wp-content/uploads/fsqm-files/hacking-a-roblox-scammer_GM431946152.pdf
    • https://bibliopolis.be/wp-content/uploads/fsqm-files/how-to-get-hacks-for-prison-life-roblox_GM431946152.pdf
    • https://bibliopolis.be/wp-content/uploads/fsqm-files/how-to-cheat-in-roblox-mining-simulator_GM431946152.pdf
    • https://bibliopolis.be/wp-content/uploads/fsqm-files/roblox-limiteds-for-free_GM431946152.pdf
    • https://bibliopolis.be/wp-content/uploads/fsqm-files/get-free-robux_GM431946152.pdf
    • https://bibliopolis.be/wp-content/uploads/fsqm-files/free-robux-giveaway-live-2021_GM431946152.pdf
    • https://bibliopolis.be/wp-content/uploads/fsqm-files/minecraft-toys-for-free_GM479516143.pdf
    • https://bibliopolis.be/wp-content/uploads/fsqm-files/citizen-roblox-hacking_GM431946152.pdf
    • https://bibliopolis.be/wp-content/uploads/fsqm-files/how-to-get-free-tickets-and-robux-on-roblox_GM431946152.pdf
    • https://bibliopolis.be/wp-content/uploads/fsqm-files/videos-de-como-ser-hacker-en-roblox_GM431946152.pdf
    • https://bibliopolis.be/wp-content/uploads/fsqm-files/como-tener-robux-gratis-en-roblox-2021-sin-hack_GM431946152.pdf
    • https://bibliopolis.be/wp-content/uploads/fsqm-files/roblox-lumber-tycoon-2-hack-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000055dd.bin
4b4425cab12ed326036c53a5e8a65d76fb314e814f42218b23dbf5507822b907		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x55DD 25176 bytes
font_01_sfnt_off00008ffe.bin
4c4e092bbabbf991771b2347f66848d88b11fde0584b5f1b62546b8d9313def5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FFE 19320 bytes

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