Malicious PDF — malware analysis report

Static analysis result for SHA-256 897f00663940c4eb…

MALICIOUS

PDF

35.3 KB Created: 2021-07-06 07:44:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a0bcb861c3ce21b53859e458642a8431 SHA-1: fd7472f53052c3d8e83c6dadb446db941cdd9c0a SHA-256: 897f00663940c4eb2f9b5ff000ac7aa95699fcbeaaf8691571efe62b1c3d5640
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and lures users with promises of free in-game currency for popular games. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs suggests a download or redirection attempt. The document body and heuristics indicate a social engineering tactic to trick users into downloading potentially unwanted or malicious software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.tw/app/406889139/coin-master-free-download-app-game-hack
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/free-robux-cards_GM431946152.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/coin-master-free-spins-2021-generator_GM406889139.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/boku-no-roblox-hack_GM431946152.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/free-robux-android_GM431946152.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/coin-master-daily-spins-and-coins_GM406889139.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/i-hacked-robux_GM431946152.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/how-to-change-roblox-username-for-free_GM431946152.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/how-to-get-free-robux-without-paying_GM431946152.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/robux-com-roblox_GM431946152.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/coin-master-daily-free-spins-link-today-haktuts_GM406889139.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/how-to-get-tiktok-free-followers_GM835599320.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/free-coin-master-spins-for-today_GM406889139.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/como-hackear-coin-master-sin-verificacion-humana_GM406889139.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/tiktok-free-like_GM835599320.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/free-robux-just-enter-username-and-password_GM431946152.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/roblox-pet-simulator-hack_GM431946152.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/free-robux-without-human-verification-android_GM431946152.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/yt-how-download-script-hack-roblox-jailbreak_GM431946152.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/robux-hack-computer-no-app-download_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033cf.bin
0adf037362ff1cb3004cdd5914c30b002cbaedf8a64b99b4bc80e235dbc39f10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33CF 22552 bytes
font_01_sfnt_off000065da.bin
2166f25561c4373c6e80d06891fd885867d3a729d1a06b695fec64284d0c2295		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65DA 18756 bytes

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