Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b125d40b38ceffc…

MALICIOUS

PDF

34.2 KB Created: 2021-07-06 21:41:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f017067d2caf512cdf3b9dea00672a5f SHA-1: 6c38e35869027b9faf9f8669a5e4d850f9920a89 SHA-256: 5b125d40b38ceffcfd7211d2a14cbc3bea64d1667bdb19e277ee7ad8fcdfbecb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF document contains multiple links to known malicious redirectors and lures users with game hack content. The primary malicious URL identified is http://netcdn.tw/app/406889139/coin-master-hack-tool-india-game-hack. While no scripts were explicitly extracted, the presence of PDF-specific exploit heuristics suggests potential for client-side exploitation, likely leading to further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.tw/app/406889139/coin-master-hack-tool-india-game-hack In PDF document text
    • https://de-licht.com/image/data/files/roblox-free-online-game-demo_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • https://de-licht.com/image/data/files/in-roblox-how-to-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/cheat-engine-roblox-windows-8_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/javascript-hack-roblox_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/free-roblox-generator_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/get-free-tix-and-robux_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/free-roblox-bee-swarm-codes_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/www-coinmaster-com_GM406889139.pdfIn PDF document text
    • https://de-licht.com/image/data/files/roblox-novlcip-hacks_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • https://de-licht.com/image/data/files/coin-master-heaven_GM406889139.pdfIn PDF document text
    • https://de-licht.com/image/data/files/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://de-licht.com/image/data/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://de-licht.com/image/data/files/comment-hacker-un-compte-roblox-2021_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/roblox-online-roblox-hack_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_off000030d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30D9 22528 bytes
SHA-256: c9476166e3614261ef835f9a40355ee4b01ea4d74aa10c34ea41778a3ed15137
font_01_sfnt_off000062f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F7 18252 bytes
SHA-256: ffe97fc8cee96c1fd45e73c60664157d7c2e594940e0fa3cef2a8dd17db459bf

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