Malicious PDF — malware analysis report

Static analysis result for SHA-256 20f2a348ee443e3a…

MALICIOUS

PDF

32.4 KB Created: 2021-06-30 05:55:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 34b23cf1f159829acd2bd46463c0795a SHA-1: 6b3f89de29db347daf94fb858edad28794b2e46e SHA-256: 20f2a348ee443e3a6f92ab49f90e4a8da9831e49969a13830443a032ab6490c2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically promoting 'free generator / game hack' lures for popular games like Roblox and Coin Master. The document body explicitly contains the URL http://netcdn.co/app/431946152/get-roblox-app-for-free-game-hack, which is identified as a malicious redirector. This indicates a phishing or scam attempt designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/get-roblox-app-for-free-game-hack In PDF document text
    • https://sunnygarden.com.tw/image/data/files/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/toolbox-for-minecraft-pe-ios_GM479516143.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/spin-link_GM406889139.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/coin-master-hack-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/freerobuxhack-us_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/how-to-get-free-spins-on-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/roblox-free-rainbow-wings_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/get-robux-com_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/game-give-free-robux_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/how-to-make-your-own-roblox-hack_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/free-robux-net_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/roblox-mods-for-free_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/www-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/how-to-hack-roblox-for-robux-2021_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/how-to-hack-coin-master-game-without-root_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_off00002a18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A18 21832 bytes
SHA-256: adac0430fc652bf15b78fc83859a74938c52eabb19512912e2bf409c37732d98
font_01_sfnt_off00005a2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A2F 18932 bytes
SHA-256: 5d5bd3b9205c347d1c4dfb04d0d8fbe5829e04ccd9f2b0059cb4afa2f331cf26

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