Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3e3b7d8d2d75409…

MALICIOUS

PDF

45.0 KB Created: 2021-06-02 23:22:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e8f135822c774ddc4cbb2bb8b254a198 SHA-1: b44b9e6cba87c5013b1cd9cc0ac9d0a181d7b044 SHA-256: e3e3b7d8d2d75409217ab59146839eac51385e22c74e30e8e97a244e62d693cb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, masquerading as game hacks and free generator sites. The primary lure is a 'free generator / game hack' for Roblox, directing users to the malicious URL https://netcdn.xyz/app/431946152/how-to-wall-hack-in-roblox-jailbreak-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a malicious redirector workflow, likely intended to lead users to further malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.xyz/app/431946152/how-to-wall-hack-in-roblox-jailbreak-game-hack In PDF document text
    • http://www.sapaengineering.kz/images/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/free-robux_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/tiktok-like-bot-free_GM835599320.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/hack-coin-master-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/coin-master-free-spins-link-october-2021_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/free-robux-download_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/free-robux-live_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/free-tiktok-hearts_GM835599320.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/game-give-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/minecraft-hack-mod_GM479516143.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
stream_004_off000051c2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51C2 25000 bytes
SHA-256: 7ef50145e1631687e6d7e2b3bbc7ea375a9ee6836e7a1d206e3808b5f374d2b8
font_01_sfnt_off00008b98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B98 18832 bytes
SHA-256: 64aaedda4f75bd0024649006b851a768b356ffdb267dd90336e219f503b351a6

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