Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2e1a02b747c7db1…

MALICIOUS

PDF

47.6 KB Created: 2021-05-13 16:12:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: fd0f179c2b839169a3e72b26362609ec SHA-1: 84f2fc64311dd2498afe1f00e9a5ae837a119b09 SHA-256: d2e1a02b747c7db1abc396fbc5b93b94e5c4421855452f1654bbdd1fea0a4d6e
82 Risk Score

Malware Insights

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

The document displays a fake CAPTCHA lure, which is a common social engineering tactic to trick users into interacting with malicious links. The embedded URLs point to sites offering game hacks and cheats, further supporting the scam or malware distribution pretext. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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-to-get-free-coins-on-coin-master-2021-game-hack
    • http://anisio.eti.br/ckfinder/userfiles/files/coin-master-hack-online-without-human-verification_GM406889139.pdf
    • http://anisio.eti.br/ckfinder/userfiles/files/how-to-get-hacks-on-minecraft_GM479516143.pdf
    • http://anisio.eti.br/ckfinder/userfiles/files/coin-master-free-spins-link-facebook_GM406889139.pdf
    • http://anisio.eti.br/ckfinder/userfiles/files/give-me-free-robux_GM431946152.pdf
    • http://anisio.eti.br/ckfinder/userfiles/files/coin-master-hack-without-verification_GM406889139.pdf
    • http://anisio.eti.br/ckfinder/userfiles/files/download-hack-coin-master_GM406889139.pdf
    • http://anisio.eti.br/ckfinder/userfiles/files/free-robux-codes-2021_GM431946152.pdf
    • http://anisio.eti.br/ckfinder/userfiles/files/hack-mod-coin-master_GM406889139.pdf
    • http://anisio.eti.br/ckfinder/userfiles/files/free-robux-that-actually-works_GM431946152.pdf
    • http://anisio.eti.br/ckfinder/userfiles/files/free-face-roblox_GM431946152.pdf
    • http://anisio.eti.br/ckfinder/userfiles/files/hack-coin-master-download_GM406889139.pdf
    • http://anisio.eti.br/ckfinder/userfiles/files/como-hackear-coin-master-sin-verificacion-humana_GM406889139.pdf
    • http://anisio.eti.br/ckfinder/userfiles/files/coin-master-free-spin-bonus_GM406889139.pdf
    • http://anisio.eti.br/ckfinder/userfiles/files/free-robux-co_GM431946152.pdf
    • http://anisio.eti.br/ckfinder/userfiles/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdf
    • http://anisio.eti.br/ckfinder/userfiles/files/how-to-get-free-robux-without-any-verification_GM431946152.pdf
    • http://anisio.eti.br/ckfinder/userfiles/files/claim-free-robux_GM431946152.pdf
    • http://anisio.eti.br/ckfinder/userfiles/files/hack-coin-master-for-android_GM406889139.pdf
    • http://anisio.eti.br/ckfinder/userfiles/files/minecraft-hacks-xbox-one_GM479516143.pdf
    • http://anisio.eti.br/ckfinder/userfiles/files/give-me-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b1c.bin
842017bd3029df4d3805fdda365cb201d975268e61d147e6804b0eb8a18d56ba
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B1C 30904 bytes
font_01_sfnt_off00008df8.bin
3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
pdf-font-stream PDF embedded font (sfnt) at offset 0x8DF8 2840 bytes
font_02_sfnt_off000097aa.bin
ed87a9cf83e2375ebb0940fb8e34e8bfcad05e854391f2218d22e51fb5fbc08b
pdf-font-stream PDF embedded font (sfnt) at offset 0x97AA 18276 bytes