Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4fc1ca12df66fa3…

MALICIOUS

PDF

34.3 KB Created: 2021-06-27 11:35:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d2be46c0761aed370e43c574f0a00b94 SHA-1: 25c83b6b0ec437547bc70ad20e203bee73b30409 SHA-256: b4fc1ca12df66fa3dd9109bf266de645ec0d44a60478c272a991ce202bf06d35
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 0.9980

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 http://netcdn.co/app/431946152/how-to-hack-in-roblox-2021-game-hack PDF link annotation
    • http://www.studiomilone.net/images/mad-city-hacks-roblox-windows-7_GM431946152.pdfIn PDF document text
    • http://www.studiomilone.net/images/play-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://www.studiomilone.net/images/how-to-get-free-robux-on-ipad-real_GM431946152.pdfIn PDF document text
    • http://www.studiomilone.net/images/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.studiomilone.net/images/free-roblox-hacks-like-jjsploits_GM431946152.pdfIn PDF document text
    • http://www.studiomilone.net/images/free-tiktok-fans-no-human-verification-or-downloading-apps_GM835599320.pdfIn PDF document text
    • http://www.studiomilone.net/images/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://www.studiomilone.net/images/infinite-money-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.studiomilone.net/images/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://www.studiomilone.net/images/free-robux-2021-pastebin_GM431946152.pdfIn PDF document text
    • http://www.studiomilone.net/images/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://www.studiomilone.net/images/free-robloxcom-accounts_GM431946152.pdfIn PDF document text
    • http://www.studiomilone.net/images/roblox-executor-free_GM431946152.pdfIn PDF document text
    • http://www.studiomilone.net/images/coin-master-official-website_GM406889139.pdfIn PDF document text
    • http://www.studiomilone.net/images/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.studiomilone.net/images/guest-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.studiomilone.net/images/how-can-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.studiomilone.net/images/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • http://www.studiomilone.net/images/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • http://www.studiomilone.net/images/how-to-get-free-robux-without-doing-anything-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_off00002f5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F5D 22120 bytes
SHA-256: 1a45850f0de70c94467b51bfdefb7cdfd89af7e36923e8503a10a35b1579df99
font_01_sfnt_off00006023.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6023 19224 bytes
SHA-256: 19fbb3d2a48e2929f502713a046198cfd603542f55de5b50443dfa872ae97908

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