Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeecbef4c37b35ed…

MALICIOUS

PDF

34.6 KB Created: 2021-07-06 23:10:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: f4cfed0f760a6888c67f180e1e43f35a SHA-1: aa294916fb90500d2a766b1e34658bf78cebacbe SHA-256: aeecbef4c37b35ed399d9b71d422da76f44abdb1efe9ea6d8a1a23e687af770c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a game hack lure, directing users to the URL http://netcdn.tw/app/406889139/how-to-get-coin-master-card-free-game-hack. This URL is likely part of a phishing or scam campaign designed to trick users into downloading malware or visiting malicious sites. No scripts were extracted, but the PDF structure and embedded URI strongly suggest 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/how-to-get-coin-master-card-free-game-hack PDF link annotation
    • https://xiangquan.com.tw/image/data/files/minecraft-ore-finder-mod_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-com-real_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-get-free-tokens-in-minecraft-ps4_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-root-hack_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-free-online_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-top_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/jamaica-roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-admin-free-spins_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-hack-accounts-2021_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/lucky-patcher-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/hack-page-roblox_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/get-free-robux-no-app-download_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/today-free-spin-coin-master_GM406889139.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_off0000312c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x312C 22836 bytes
SHA-256: 584e781b59e14eb296f5f0883bc1e3d6f2527b5c363a05d8e19e48bde9f373a3
font_01_sfnt_off00006452.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6452 18336 bytes
SHA-256: 2280f0e6fbe29086ff047cb2b73bb4cd092e46844cee65a644b638b322da15b8

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