Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dc6a078eb849d08…

MALICIOUS

PDF

41.9 KB Created: 2021-05-14 07:14:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 47a914e98df7aa3b1be8ddb3942a5945 SHA-1: ab86781c7950a1c3ab60aff05ac9037e11fa3e13 SHA-256: 0dc6a078eb849d089d8205f4303e4d070086765cfe6bbec2a067b74d4b463c19
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-confidence heuristic indicating it links to a game hack lure, specifically targeting Coin Master players. The embedded URL, https://netcdn.xyz/app/406889139/get-free-gold-cards-in-coin-master-game-hack, is likely a redirector to a malicious site or a download. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a social engineering attack to trick users into visiting potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/406889139/get-free-gold-cards-in-coin-master-game-hack PDF link annotation
    • https://radiocaxias.com.br/portal/imagens/files/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/coin-master-hack-tuts_GM406889139.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/www-rbx-com_GM431946152.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/earn-free-robux_GM431946152.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/hack-coin-master-game-apk_GM406889139.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/coin-master-hack-2021-iphone_GM406889139.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/roblox-hackprogamers-com_GM431946152.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/free-spins-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/how-to-earn-robux-for-free-2021_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_off00004a76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A76 24948 bytes
SHA-256: 277e55b3e7f8d0047f6725fafe28b0add34da8f696470c5af72e0d15fd609c36
font_01_sfnt_off000082a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82A0 17960 bytes
SHA-256: f869bc891c1b65231b6187b5c2b301482ba9b67ab65507215d31018b67534d9f

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