Malicious PDF — malware analysis report

Static analysis result for SHA-256 9950c163bfb73518…

MALICIOUS

PDF

35.3 KB Created: 2021-06-28 15:41:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 512a86de04bfbfed11c243e1432e6874 SHA-1: 962cef378440e3f8b489f918637b07ef42f51b11 SHA-256: 9950c163bfb73518575a235facefb925593ae2465a625bd5008302fe92703361
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains numerous URLs pointing to sites offering game cheats and hacks, including a specific URL related to using 'cmd to hack Roblox'. The ML classifier strongly flagged this PDF as malicious, and heuristics indicate the presence of external URIs and a 'download button' lure. The document body text, though partially garbled, reinforces the theme of game hacking and includes URLs that likely lead to malicious downloads.

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/how-to-use-cmd-to-hack-roblox-game-hack
    • https://www.jjpremiers.com/files/free-games-coin-master_GM406889139.pdf
    • http://jjpremiers.com/files/mathep_GM431946152.pdf
    • https://www.jjpremiers.com/files/free-robux-only-1-step_GM431946152.pdf
    • http://jjpremiers.com/files/free-robux-hack-us_GM431946152.pdf
    • https://www.jjpremiers.com/files/coin-master-hack-app-download-free_GM406889139.pdf
    • http://jjpremiers.com/files/roblox-bad-business-hack_GM431946152.pdf
    • https://www.jjpremiers.com/files/minecraft-18-9-hacked-client_GM479516143.pdf
    • http://jjpremiers.com/files/coin-master-free-in-app-purchases-jailbreak_GM406889139.pdf
    • https://www.jjpremiers.com/files/how-to-get-free-robux-on-computer_GM431946152.pdf
    • https://www.jjpremiers.com/files/hack-coin-master-using-cheat-engine_GM406889139.pdf
    • https://www.jjpremiers.com/files/coin-master-hack-free-spins_GM406889139.pdf
    • http://jjpremiers.com/files/free-modded-minecraft-server_GM479516143.pdf
    • https://www.jjpremiers.com/files/pokemon-go-free-lucky-egg_GM1094591345.pdf
    • http://jjpremiers.com/files/free-slime-wings-roblox_GM431946152.pdf
    • https://www.jjpremiers.com/files/free-spins-coin-master-unlimited_GM406889139.pdf
    • https://www.jjpremiers.com/files/free-robux-gift-card-generator_GM431946152.pdf
    • http://jjpremiers.com/files/free-minecraft-capes_GM479516143.pdf
    • https://www.jjpremiers.com/files/how-to-earn-robux_GM431946152.pdf
    • https://www.jjpremiers.com/files/free-minecraft-skin-maker_GM479516143.pdf
    • https://www.jjpremiers.com/files/haktuts-coin-master-free-spins-2021_GM406889139.pdf
    • http://netcdn.co/app/431946152/
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030b0.bin
3e157f99aa56dd0c54ad24905c52d82aaeed29c35fea418e909af08c50b342ff
pdf-font-stream PDF embedded font (sfnt) at offset 0x30B0 23156 bytes
font_01_sfnt_off00006432.bin
f05975269d9c8dbed395cb2353e5c43e440c0d951d96dab0f112ff1165ed965e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6432 19252 bytes