Malicious PDF — malware analysis report

Static analysis result for SHA-256 6be924d397c0d0f6…

MALICIOUS

PDF

44.4 KB Created: 2021-06-11 09:32:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 4c41f8300f20b7097dc6f95597b4b1fd SHA-1: 8264b60b32053bf8403173a8ef6eb268a1bcfcf0 SHA-256: 6be924d397c0d0f65ae30271d1e1a0b4ce15e93b3e91e73f3f5b49c98e2b312b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic firing indicating it links to a 'free generator / game hack' redirector. The document body, though heavily obfuscated, contains references to game hacks and a URL that aligns with this lure. The primary malicious URL identified is https://netcdn.tw/app/431946152/roblox-clothes-maker-free-game-hack, which likely serves as a landing page for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/roblox-clothes-maker-free-game-hack PDF link annotation
    • https://teatrofinisterrae.cl/images/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://teatrofinisterrae.cl/images/arsenal-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://teatrofinisterrae.cl/images/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
    • https://teatrofinisterrae.cl/images/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • https://teatrofinisterrae.cl/images/minecraft-hacked-client-bedrock_GM479516143.pdfIn PDF document text
    • https://teatrofinisterrae.cl/images/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://teatrofinisterrae.cl/images/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • https://teatrofinisterrae.cl/images/how-to-earn-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://teatrofinisterrae.cl/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://teatrofinisterrae.cl/images/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • https://teatrofinisterrae.cl/images/free-likes-and-favorites-on-roblox_GM431946152.pdfIn PDF document text
    • https://teatrofinisterrae.cl/images/how-to-get-cheap-pubg-uc_GM1330123889.pdfIn PDF document text
    • https://teatrofinisterrae.cl/images/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • https://teatrofinisterrae.cl/images/robux-hack-2021-on-windows_GM431946152.pdfIn PDF document text
    • https://teatrofinisterrae.cl/images/how-2-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://teatrofinisterrae.cl/images/coin-master-free-spin-link-daily_GM406889139.pdfIn PDF document text
    • https://teatrofinisterrae.cl/images/free-free-robux_GM431946152.pdfIn PDF document text
    • https://teatrofinisterrae.cl/images/coin-master-hack-online-cheat_GM406889139.pdfIn PDF document text
    • https://teatrofinisterrae.cl/images/old-roblox-accounts-for-free_GM431946152.pdfIn PDF document text
    • https://teatrofinisterrae.cl/images/free-robux-scams_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_off00004fcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FCF 24936 bytes
SHA-256: c9a8ef69a7a5970255d7e0528f54ed8fe689e23ae76299d4f51da386f9f22a90
font_01_sfnt_off00008998.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8998 18812 bytes
SHA-256: abd3ac83c4b0582a00f6cb753ac8e0967fcb174b51d81329c9359387f1465ffd

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