Malicious PDF — malware analysis report

Static analysis result for SHA-256 e94913412ea509be…

MALICIOUS

PDF

47.9 KB Created: 2021-06-10 17:48:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e965c6e2f7cddf0d59dd42027ef89106 SHA-1: 8f1d5742e4be6d6282c0d93a7e4ecfbb1cecc057 SHA-256: e94913412ea509be6627beb4627ad1f85511fecf6986fa2eb2d18cb39ded8917
82 Risk Score

Malware Insights

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

The PDF document contains a lure for free in-game currency, specifically mentioning 'Hack De Robux 2021 Gratis', and includes an external URI pointing to a related download page. The heuristic 'SE_CLIPBOARD_COMMAND_LURE' indicates the document likely instructs the user to execute commands, suggesting a multi-stage attack. While no scripts were directly extracted, the presence of external URLs and the ML classifier's high confidence score point towards a malicious downloader.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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/hack-de-robux-2021-gratis-game-hack
    • https://ccej.lviv.ua/images/free-robux-codes-no-verification-2021_GM431946152.pdf
    • https://ccej.lviv.ua/images/free-robux-laptop_GM431946152.pdf
    • https://ccej.lviv.ua/images/roblox-hacks-for-free-robux-2021-febuary_GM431946152.pdf
    • https://ccej.lviv.ua/images/free-unlimited-robux_GM431946152.pdf
    • https://ccej.lviv.ua/images/minecraft-hacks-115-2_GM479516143.pdf
    • https://ccej.lviv.ua/images/roblox-weight-lifting-simulator-3-hack_GM431946152.pdf
    • https://ccej.lviv.ua/images/roblox-hackeado-pc-gratis_GM431946152.pdf
    • https://ccej.lviv.ua/images/free-minecraft-for-kids_GM479516143.pdf
    • https://ccej.lviv.ua/images/get-coin-master-spins-free_GM406889139.pdf
    • https://ccej.lviv.ua/images/coin-master-tiradas-gratis_GM406889139.pdf
    • https://ccej.lviv.ua/images/coin-master-hack-online-generator_GM406889139.pdf
    • https://ccej.lviv.ua/images/does-roblox-hacks-your-bank-account_GM431946152.pdf
    • https://ccej.lviv.ua/images/coin-master-free-stuff_GM406889139.pdf
    • https://ccej.lviv.ua/images/free-foxy-food-coin-master_GM406889139.pdf
    • https://ccej.lviv.ua/images/minecraft-redeem-code-free-2021_GM479516143.pdf
    • https://ccej.lviv.ua/images/coin-master-apk-mod-free-download_GM406889139.pdf
    • https://ccej.lviv.ua/images/minecraft-handbook_GM479516143.pdf
    • https://ccej.lviv.ua/images/free-robux-no-human-verification-generator_GM431946152.pdf
    • https://ccej.lviv.ua/images/minecraft-ios-mods_GM479516143.pdf
    • https://ccej.lviv.ua/images/roblox-com-free-play_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000509b.bin
3aa48df6bbf2843e1484199bc0180cd4fcd957abbc4be6fc657ee4f068edf817
pdf-font-stream PDF embedded font (sfnt) at offset 0x509B 25372 bytes
font_01_sfnt_off00008bc0.bin
e28d2c57f35643e2026f86c34ac3bb63cba74be3f6c066e81aba6d285e5a121b
pdf-font-stream PDF embedded font (sfnt) at offset 0x8BC0 2908 bytes
font_02_sfnt_off000095b9.bin
78d5eb007b12201f113f77ab71eb78ddbc1acd5aaa6f69d214cf64502ef0ad4c
pdf-font-stream PDF embedded font (sfnt) at offset 0x95B9 19044 bytes