Malicious PDF — malware analysis report

Static analysis result for SHA-256 f479411960a84388…

MALICIOUS

PDF

35.0 KB Created: 2021-07-04 10:23:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 543df923ecb5e2e5f1728a4f69c3cf3f SHA-1: 21e986e409bded6daf259d50aece2d33030d36b2 SHA-256: f479411960a84388a3d697d9aa73a834342e1f0452f7cc2ca182e1e62b8f396b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a lure for 'free Robux' and game hacks, directing users to a suspicious URL. The ML classifier strongly flagged this PDF as malicious, and the embedded URI points to a known malicious domain. While no scripts were extracted, the document's content and linked URL suggest it is designed to trick users into visiting a site that likely hosts malware or phishing content.

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/431946152/free-robux-no-verification-2021-game-hack PDF link annotation
    • https://lib.insan-unggul.ac.id/repository/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/cs-go-roblox-wall-hack_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/t-shirt-roblox-free-shipping_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/how-to-get-free-robux-on-roblox-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/coinmaster-fan-page_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/roblox-welcome-to-roblox-building-hack_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/free-old-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/we-are-devs-hacks-guest-world-roblox_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/game-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/free-robux-irobux_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/roblox-i-cheated-for-this-box_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/https-web-roblox-hack_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/admin-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/roblox-google-shop-for-free_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/roblox-free-avatar-items_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/roblox-piano-hack-2021_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/roblox-how-to-remove-your-head-for-free_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/roblox-cheat-engine-commands_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_off000030a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30A4 22396 bytes
SHA-256: a0f4719b79a516c3afb4c49dce54a1cd9d9ac6ed4c7b7164bc0b97885d13e8d6
font_01_sfnt_off00006252.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6252 19476 bytes
SHA-256: 0ea569e2458714af2fc88272f668bb9559ca065cecd410792851a624a05e4648

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