Malicious PDF — malware analysis report

Static analysis result for SHA-256 48174bcbb361b6ea…

MALICIOUS

PDF

44.7 KB Created: 2021-05-11 08:32:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: baeed4461191f1b70f1d6e752e2b5c15 SHA-1: f40304c583ee9296ebf7908b7aa02ffe62b8b010 SHA-256: 48174bcbb361b6ea6580f70a8f9a1d67dfe03edb4c148c483bcfdf9b5839edd2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links that redirect to websites promising game hacks and free in-game currency. The primary lure appears to be related to 'Coin Master' and 'Robux'. The ML classifier strongly indicated maliciousness, and the presence of numerous suspicious URLs suggests a phishing or scamming attempt designed to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/coin-master-daily-spin-link-game-hack PDF link annotation
    • http://bemviverclin.com.br/images/coin-master-free-spins-link-blogspot-april-2021_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/coin-master-hack-spins-apk_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://bemviverclin.com.br/images/coin-master-free-spins-moonactive_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://bemviverclin.com.br/images/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://bemviverclin.com.br/images/coin-master-free-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/how-to-get-roebucks-on-roblox_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/coin-master-free-stars_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://bemviverclin.com.br/images/coin-master-game-hacking_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://bemviverclin.com.br/images/free-coins-and-spins-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/coin-master-pro-hack_GM406889139.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/www-cheatsk-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/minecraft-pe-hack-client_GM479516143.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049bc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49BC 24524 bytes
SHA-256: 836ffec27164de9d171938aa0bcdab6b4ce2500815ed1af890a5cc29a17414cf
font_01_sfnt_off0000820d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x820D 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008bbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BBE 18316 bytes
SHA-256: 5f3aa979c0c75b9e9bcded1c8d551e9f9e6ead33f385895e7850a31af22003f0

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