Malicious PDF — malware analysis report

Static analysis result for SHA-256 09be5a34de25494b…

MALICIOUS

PDF

42.3 KB Created: 2021-05-19 07:58:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: dd3512290261b67b69162aec62f31dde SHA-1: fb81ce32909311b4c3b5a033d1962dd95619a057 SHA-256: 09be5a34de25494bac371dec1f33fc5ee9bedb3005b27abea1d5ee75cf69bd1c
122 Risk Score

Malware Insights

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

This PDF document employs a fake CAPTCHA lure to trick users into interacting with it, likely to initiate a download of a second-stage payload. The embedded URI and numerous other URLs point to sites offering game-related cheats, which is a common theme for social engineering lures. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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
  • 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 https://netcdn.xyz/app/406889139/coin-master-free-spin-and-coins-links-home-game-hack
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/coin-master-free-link-spin_GM406889139.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/roblox-hack-me_GM431946152.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/coin-master-daily-free-spins-link_GM406889139.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/free-roblox-codes_GM431946152.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/coin-master-free-cards-and-spin-link_GM406889139.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/roblox-hacked-accounts-list_GM431946152.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/clean-master-free-coins-and-spins_GM406889139.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/coin-master-hack-co_GM406889139.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/free-400-spins-coin-master_GM406889139.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/free-coin-coin-master_GM406889139.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/free-minecraft-skin-creator_GM479516143.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/free-robux-generator-2021_GM431946152.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/pasos-para-hackear-coins-master_GM406889139.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/coin-master-free-spins-link-fb_GM406889139.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/free-robux-obby_GM431946152.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/codes-to-get-free-robux_GM431946152.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/free-robux-without-downloading-anything_GM431946152.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/coin-master-spins-hack_GM406889139.pdf
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/free-robux-just-enter-username-and-password_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004afc.bin
ead50b7a26953ff6c290e4574b903524ad817260a3feb96357fdedfaf2aff640		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AFC 24648 bytes
font_01_sfnt_off00008264.bin
c6f1255b5246b10a2381080087e328848ca3d63cb104c3d5d5a1d34eeed5229c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8264 18492 bytes

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