Malicious PDF — malware analysis report

Static analysis result for SHA-256 793d02371a7ec9a4…

MALICIOUS

PDF

46.7 KB Created: 2021-05-16 15:57:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 0cd29f1b630a9e56685c406c3d47f37c SHA-1: 6511e5fcfae084699a6481f6d2048f8232bc9b05 SHA-256: 793d02371a7ec9a4f4063d51efb0065cf5b6d2629a39939ccd17d84ae956781d
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA or verification prompt to trick users into clicking a link, which is a common social engineering tactic. The embedded URL and numerous other URLs point to sites offering in-game currency hacks, reinforcing the lure. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

Heuristics 4

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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.xyz/app/406889139/how-can-you-get-free-spins-on-coin-master-game-hack
    • http://greenpasturesfarm.com.au/images/roblox-hack-ios_GM431946152.pdf
    • http://greenpasturesfarm.com.au/images/rbx-hut-promo-codes_GM431946152.pdf
    • http://greenpasturesfarm.com.au/images/bloxawards-com-earn-free-robux_GM431946152.pdf
    • http://greenpasturesfarm.com.au/images/master-coin-free-spin_GM406889139.pdf
    • http://greenpasturesfarm.com.au/images/roblox-printables-free_GM431946152.pdf
    • http://greenpasturesfarm.com.au/images/coin-master-hack-unlimited-spins-apk_GM406889139.pdf
    • http://greenpasturesfarm.com.au/images/free-coin-master-spins-blog_GM406889139.pdf
    • http://greenpasturesfarm.com.au/images/how-to-get-free-robux-in-2021_GM431946152.pdf
    • http://greenpasturesfarm.com.au/images/free-spins-coin-master-hack-2021_GM406889139.pdf
    • http://greenpasturesfarm.com.au/images/free-robux-with-no-survey_GM431946152.pdf
    • http://greenpasturesfarm.com.au/images/how-to-hack-roblox-accounts-passwords_GM431946152.pdf
    • http://greenpasturesfarm.com.au/images/minecraft-free-ios_GM479516143.pdf
    • http://greenpasturesfarm.com.au/images/robux-boost_GM431946152.pdf
    • http://greenpasturesfarm.com.au/images/robloxheroxyz-free-robux_GM431946152.pdf
    • http://greenpasturesfarm.com.au/images/coin-master-daily-free-spin-app_GM406889139.pdf
    • http://greenpasturesfarm.com.au/images/free-attacks-on-coin-master_GM406889139.pdf
    • http://greenpasturesfarm.com.au/images/coin-master-apk-hack-358_GM406889139.pdf
    • http://greenpasturesfarm.com.au/images/hey-google-how-do-you-get-free-robux_GM431946152.pdf
    • http://greenpasturesfarm.com.au/images/hacks-for-coin-master_GM406889139.pdf
    • http://greenpasturesfarm.com.au/images/roblox-hack-com_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d89.bin
2d266d79dad38bb7cb7b44b486f38c0c3f898a0676d9742adeb8aaf978091403		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D89 27240 bytes
font_01_sfnt_off00008a42.bin
3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A42 2840 bytes
font_02_sfnt_off000093f4.bin
60b67ae9007cef9d51ba9fda79635e48158785d2310ed2ed67ffce6bba3269ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93F4 18352 bytes

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