Malicious PDF — malware analysis report

Static analysis result for SHA-256 215625203948d39d…

MALICIOUS

PDF

34.8 KB Created: 2021-06-19 04:54:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 94949565a78d9aefcc0267574ac020e2 SHA-1: 8b8870f477e62c6e2e192881619a2c5d3cb5ae08 SHA-256: 215625203948d39d34c2ffaf916facf597cc089cf0332542ce960bf81cc816d2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that lead to a known malicious redirector infrastructure. The document body and heuristics indicate a lure for free game hacks or generators, designed to trick users into clicking the malicious links. The primary link identified is http://netcdn.co/app/431946152/youtube-the-coolunique-free-robux-game-hack, which is part of a chain of redirects.

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.co/app/431946152/youtube-the-coolunique-free-robux-game-hack In PDF document text
    • https://cursocejas.com.br/imagens/userfiles/files/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://cursocejas.com.br/imagens/userfiles/files/claimrobux-net_GM431946152.pdfIn PDF document text
    • https://cursocejas.com.br/imagens/userfiles/files/free-spins-for-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://cursocejas.com.br/imagens/userfiles/files/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • https://cursocejas.com.br/imagens/userfiles/files/mcpe-free-download_GM479516143.pdfIn PDF document text
    • https://cursocejas.com.br/imagens/userfiles/files/coin-master-hack-blogspot_GM406889139.pdfIn PDF document text
    • https://cursocejas.com.br/imagens/userfiles/files/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://cursocejas.com.br/imagens/userfiles/files/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://cursocejas.com.br/imagens/userfiles/files/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • https://cursocejas.com.br/imagens/userfiles/files/descargar-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://cursocejas.com.br/imagens/userfiles/files/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • https://cursocejas.com.br/imagens/userfiles/files/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • https://cursocejas.com.br/imagens/userfiles/files/blox-fun-info_GM431946152.pdfIn PDF document text
    • https://cursocejas.com.br/imagens/userfiles/files/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • https://cursocejas.com.br/imagens/userfiles/files/free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://cursocejas.com.br/imagens/userfiles/files/coin-master-hack-ios-apk_GM406889139.pdfIn PDF document text
    • https://cursocejas.com.br/imagens/userfiles/files/free-robux-gen_GM431946152.pdfIn PDF document text
    • https://cursocejas.com.br/imagens/userfiles/files/coin-master-spin-hack-app_GM406889139.pdfIn PDF document text
    • https://cursocejas.com.br/imagens/userfiles/files/coin-master-free-spins-link-deutsch-ios_GM406889139.pdfIn PDF document text
    • https://cursocejas.com.br/imagens/userfiles/files/roblox-website-robux_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_off00003135.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3135 22080 bytes
SHA-256: 4aa6f4cc59df75166d075e33b30409bd945bfc7a19d7aa6988168671a69e28ef
font_01_sfnt_off000061b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61B2 19512 bytes
SHA-256: 26f6c2e187d54fcec51c0120e3c1a53f926d6f33f7997f8541f2cf7143e6d961

Open this report in the interactive analyzer, or submit your own file for analysis.