Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f2fdc5ca7fca4ab…

MALICIOUS

PDF

35.4 KB Created: 2021-07-07 17:42:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: ec6506e941229fc5bcabee94374e9e4d SHA-1: 1d956729d67e1cd1912ad75251362454dd48c9eb SHA-256: 4f2fdc5ca7fca4abbd8d7a662b96a9ab0ad2098954270d6448686dd71227d3db
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for free game hacks, specifically mentioning Minecraft and Robux, and embeds a URL pointing to a site offering a 'free generator'. This suggests a social engineering tactic to trick users into visiting a potentially malicious site. The ML classifier also flagged the PDF as malicious with high confidence.

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.tw/app/479516143/how-to-get-minecraft-windows-10-for-free-2021-game-hack PDF link annotation
    • http://www.tucsen.net/Public/upload/editorfiles/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • http://www.tucsen.net/Public/upload/editorfiles/hack-robux-2021-sin-verificacion-humana_GM431946152.pdfIn PDF document text
    • http://www.tucsen.net/Public/upload/editorfiles/robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.tucsen.net/Public/upload/editorfiles/minecraft-for-laptop-free_GM479516143.pdfIn PDF document text
    • http://www.tucsen.net/Public/upload/editorfiles/grab-points-login_GM431946152.pdfIn PDF document text
    • http://www.tucsen.net/Public/upload/editorfiles/free-admin-tool-roblox_GM431946152.pdfIn PDF document text
    • http://www.tucsen.net/Public/upload/editorfiles/wierd-roblox-items-for-free_GM431946152.pdfIn PDF document text
    • http://www.tucsen.net/Public/upload/editorfiles/how-to-play-minecraft-online-for-free_GM479516143.pdfIn PDF document text
    • http://www.tucsen.net/Public/upload/editorfiles/coin-master-apk-hack-download_GM406889139.pdfIn PDF document text
    • http://www.tucsen.net/Public/upload/editorfiles/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.tucsen.net/Public/upload/editorfiles/bowtie-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.tucsen.net/Public/upload/editorfiles/minecraft-login-free_GM479516143.pdfIn PDF document text
    • http://www.tucsen.net/Public/upload/editorfiles/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.tucsen.net/Public/upload/editorfiles/are-there-any-coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://www.tucsen.net/Public/upload/editorfiles/roblox-cheats-for-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://www.tucsen.net/Public/upload/editorfiles/coin-master-daily_GM406889139.pdfIn PDF document text
    • http://www.tucsen.net/Public/upload/editorfiles/how-to-get-free-faces-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.tucsen.net/Public/upload/editorfiles/free-roblox-with-tasks_GM431946152.pdfIn PDF document text
    • http://www.tucsen.net/Public/upload/editorfiles/daily-coin-master-free_GM406889139.pdfIn PDF document text
    • http://www.tucsen.net/Public/upload/editorfiles/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.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_off00003418.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3418 22368 bytes
SHA-256: e905ff8b32f447fa9925a1831aee94671456dded42de7217d2a937c1be9dfa15
font_01_sfnt_off000065a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65A5 18936 bytes
SHA-256: d89f9173c68b5ad3f200cf0910130a7487f46ddf269ae4e48135fb236ee99bed

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