Malicious PDF — malware analysis report

Static analysis result for SHA-256 97c53faf1cb235df…

MALICIOUS

PDF

41.4 KB Created: 2021-05-13 02:00:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 2f3bf4c013fad37f176cf0f983d7856f SHA-1: 82e99fc904a3678c9511ff5fb77e8c0a7a50bddf SHA-256: 97c53faf1cb235df9cd118f8db343b64431b4531229a5afd2c764ca0745a0cea
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a game hack lure. The document body and extracted URLs confirm this, pointing to a URL designed to trick users into downloading or accessing potentially malicious content. While no scripts were directly extracted, the nature of the lure suggests a potential for further malicious activity, such as downloading a second-stage payload.

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/hack-the-game-coin-master-game-hack PDF link annotation
    • http://bemviverclin.com.br/images/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://bemviverclin.com.br/images/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://bemviverclin.com.br/images/coin-master-pro-hack_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/coin-master-free-spins-moonactive_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/buxblast-com-robux_GM431946152.pdfIn PDF document text
    • http://bemviverclin.com.br/images/free-robux-place_GM431946152.pdfIn PDF document text
    • http://bemviverclin.com.br/images/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://bemviverclin.com.br/images/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://bemviverclin.com.br/images/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/coin-master-hack-mod-game-download_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • http://bemviverclin.com.br/images/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://bemviverclin.com.br/images/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://bemviverclin.com.br/images/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/coin-master-game-hacking_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/coin-master-hacks-that-work_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/coin-master-free-stars_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/coin-master-500-free-spins_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/free-online-minecraft-server_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_003_off00004670.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4670 25040 bytes
SHA-256: 6b15dad5ca89d9107f8cdf3c65f581337846e518a7b75aefec675ba4b0847d9e
font_01_sfnt_off00007ffb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FFB 18144 bytes
SHA-256: 2f83051d17fae7824be312dca8a0683f54a2c939f925aee2db8065487592d47a

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