Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe4b63a8c6408d41…

MALICIOUS

PDF

34.0 KB Created: 2021-07-04 06:02:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 24db1038553664c66ec97fd95d3af8f1 SHA-1: 85f1c0d412b3bc19d4fd574362d486f997bd1f0f SHA-256: fe4b63a8c6408d41a2ea8ba16c4caa3f5889b2f879e0059778a42d865ec572d9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users into clicking on offers for free game currency or hacks. The primary link, http://netcdn.tw/app/431946152/get-free-robux-com-game-hack, is identified as a malicious redirector. The document body and heuristics indicate a phishing or scam attempt, likely to harvest credentials or lead to further malware. No scripts were extracted from this sample.

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/431946152/get-free-robux-com-game-hack In PDF document text
    • http://www.alsultantrading.ae/userfiles/files/play-minecraft-free-online-no-download_GM479516143.pdfIn PDF document text
    • http://www.alsultantrading.ae/userfiles/files/how-do-you-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://www.alsultantrading.ae/userfiles/files/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • http://www.alsultantrading.ae/userfiles/files/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://www.alsultantrading.ae/userfiles/files/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://www.alsultantrading.ae/userfiles/files/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://www.alsultantrading.ae/userfiles/files/coin-master-free-spins-through-coin-pop_GM406889139.pdfIn PDF document text
    • http://www.alsultantrading.ae/userfiles/files/become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.alsultantrading.ae/userfiles/files/free-tiktok-followers-no-human-verification-or-survey_GM835599320.pdfIn PDF document text
    • http://www.alsultantrading.ae/userfiles/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://www.alsultantrading.ae/userfiles/files/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.alsultantrading.ae/userfiles/files/audioscribe-free-fall-ncs-full-roblox_GM431946152.pdfIn PDF document text
    • http://www.alsultantrading.ae/userfiles/files/coin-master-free-spins-23-march-2021_GM406889139.pdfIn PDF document text
    • http://www.alsultantrading.ae/userfiles/files/guuud-info-free-robux_GM431946152.pdfIn PDF document text
    • http://www.alsultantrading.ae/userfiles/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://www.alsultantrading.ae/userfiles/files/coin-master-daily-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://www.alsultantrading.ae/userfiles/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://www.alsultantrading.ae/userfiles/files/free-robux_GM431946152.pdfIn PDF document text
    • http://www.alsultantrading.ae/userfiles/files/500-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://www.alsultantrading.ae/userfiles/files/coin-master-free-spin-app-2021_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_off00002f34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F34 21972 bytes
SHA-256: 7b8b2dcf74f4555f66fef312b906f942b5b6352a5ce9e4d63d81772a00a05a42
font_01_sfnt_off00005fb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB7 19080 bytes
SHA-256: bd48df5b3587c62f460ac4547970d78652d76b982da8f06603591dccd4bca80f

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