Malicious PDF — malware analysis report

Static analysis result for SHA-256 47e7acb1bfde6e56…

MALICIOUS

PDF

33.7 KB Created: 2021-06-18 05:38:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d757f31d718fb9028d15c88b47bb7747 SHA-1: 17117607f1401447693a49ead9b1c16a0fdfcd05 SHA-256: 47e7acb1bfde6e56982623674608854a0e879e7c1506d3239c38fdffa9273400
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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/free-robux-pastebin-fast-game-hack PDF link annotation
    • https://lib.btkljogja.or.id/repository/blox-fun-info_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-free-spins-and-coins-for-today_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-spins-coin-master-apple_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/roblox-apk-hack-ios_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/roblox-heroes-online_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/roblox-sign-in-free_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/toolbox-apk_GM479516143.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/chisel-and-bits-mod-pe_GM479516143.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-hack-ios-download_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/roblox-hack-com_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-robux-hack-on-ios_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002da6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DA6 22044 bytes
SHA-256: f2297cf11f83591dfc1dc1cfbad3826a203d278f07a5b8c1aecc3c08ebac70ec
font_01_sfnt_off00005e93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E93 19092 bytes
SHA-256: 5bfd890d84b0c14d72a786ae590b650f833002b15fe449ee91ced07c3ea68d33

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