Malicious PDF — malware analysis report

Static analysis result for SHA-256 b014b24dbcfee150…

MALICIOUS

PDF

45.6 KB Created: 2021-05-12 02:53:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 50ecc7a772b93300f10ec1e30de091ab SHA-1: 73f6e6db8530b542771c7ab8df2112072b8d0302 SHA-256: b014b24dbcfee150026adc36218dc614f64e3e94fef4adda7beef6f36e56ea49
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/431946152/roblox-password-hacker-game-hack PDF link annotation
    • http://bemviverclin.com.br/images/roblox-download_GM431946152.pdfIn PDF document text
    • http://bemviverclin.com.br/images/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://bemviverclin.com.br/images/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/roblox-getting-hacked_GM431946152.pdfIn PDF document text
    • http://bemviverclin.com.br/images/free-robux-no-human-verification-or-survey-2021_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/coin-master-free-spin-today_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/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://bemviverclin.com.br/images/coin-master-hack-spins-apk_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/original-roblox_GM431946152.pdfIn PDF document text
    • http://bemviverclin.com.br/images/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://bemviverclin.com.br/images/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
    • http://bemviverclin.com.br/images/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://bemviverclin.com.br/images/how-much-robux-can-you-get-with-1-million-dollars_GM431946152.pdfIn PDF document text
    • http://bemviverclin.com.br/images/free-robux-groups-2021_GM431946152.pdfIn PDF document text
    • http://bemviverclin.com.br/images/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • http://bemviverclin.com.br/images/how-to-play-roblox-for-free_GM431946152.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
font_00_sfnt_off00004a10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A10 25544 bytes
SHA-256: e0e34e27d4fef8ebaaaf6fb794570a21fc097ba379ce9f7711a23b79a113141f
font_01_sfnt_off0000843e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x843E 2956 bytes
SHA-256: bab8933fc39dc331bc4c1c904a82b1432ab2e02478fa0a59453c98c5c231da8d
font_02_sfnt_off00008e5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E5E 18672 bytes
SHA-256: 2bdb07dac700063222d9705cc7006270fda87721bb9ffc7ab205fe7d4072a16f

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