Malicious PDF — malware analysis report

Static analysis result for SHA-256 dadb140b8ad35c32…

MALICIOUS

PDF

46.3 KB Created: 2021-06-03 12:05:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 36d7fe141f7702fcce211bc8dcca5ee3 SHA-1: 788bd0722f1751922ddc6edc097d8dea1ba3e29a SHA-256: dadb140b8ad35c3257b5ba7e0e11db52f044f56e3683361f0c1d7338fafbcf27
160 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a game hack redirect lure, pointing to malicious infrastructure. The document body, though heavily obfuscated, contains text related to 'Roblox Promo Codes' and a URL that aligns with the heuristic findings. The presence of embedded URLs and the nature of the lure suggest an attempt to trick users into visiting a malicious site, likely to download further malware or engage in phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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 https://netcdn.online/app/431946152/roblox-promo-codes-2021-robux-game-hack In PDF document text
    • http://lib-smansumsel.sch.id/repository/how-to-make-a-minecraft-server-for-free-java_GM479516143.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/how-to-get-free-spins-grom-coin-master_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-free-download-app_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/roblox-hacked-accounts-list_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/how-to-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-hack-apk-no-fb-login_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/toolbox-for-mcpe_GM479516143.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/fb-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-hack-download-android_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000052b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52B3 26216 bytes
SHA-256: 43aef7c5121c8608ce8bd1fa3dcc302e70a372ab3cfc520be42fc7070211ee7b
font_01_sfnt_off0000907c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x907C 18912 bytes
SHA-256: 78e5a4f925f7a7099a01314b73c68b79f9c6154f744724e21f80ba84a8cb6293

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