Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc5a393539d57d64…

MALICIOUS

PDF

35.6 KB Created: 2021-07-04 12:59:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5e502571046c02dccc5ff074898aff0e SHA-1: 7c6ed9a438154ebd7675578c7d1e86520f593e4b SHA-256: cc5a393539d57d64d7dc579c7f12f386432a4d12984a807fa5a939a233a26ded
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous embedded URLs, with a primary focus on 'cheats' and 'free spins' for popular games like Coin Master and Roblox. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates that the document is designed to trick users into visiting these links. The primary URL, http://netcdn.tw/app/406889139/cheats-coin-master-free-spins-and-news-game-hack, is likely a redirector to a malicious site or a phishing page. No scripts were extracted, but the document's structure and content point to a social engineering attack.

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.tw/app/406889139/cheats-coin-master-free-spins-and-news-game-hack PDF link annotation
    • http://fkunismuh.org/perpustakaan/repository/free-roblox-gift-card-codes_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/como-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/robloxlover69-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-red-hair-roblox_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/roblox-hack-ninja-legends_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/my-roblox-account-has-been-hacked-and-changed-my-email_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/como-recuperar-mi-cuenta-de-roblox-hackeada_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/how-to-get-free-robux-easy-no-human-verification_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/hack-the-game-coin-master_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-robux-1-000-000_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/how-to-get-games-that-cost-robux-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-hack-in-roblox-2021-jailbreak_GM431946152.pdfIn PDF document text
    • https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-links.htmlIn 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
stream_002_off00003326.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3326 23256 bytes
SHA-256: a80b1b6185d75e370a3ebef70cdeaff4b00d0d6d0c5a88203042c298a6ef294f
font_01_sfnt_off0000678d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x678D 18676 bytes
SHA-256: 187c53b06c05787095bdfe0dcf94dd4e1b2ba58c8389f47ea6da0d26e0945549

Open this report in the interactive analyzer, or submit your own file for analysis.