Malicious PDF — malware analysis report

Static analysis result for SHA-256 f946df757296a889…

MALICIOUS

PDF

33.7 KB Created: 2021-06-26 03:35:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8448bc89779f7f30236853136ba8c35a SHA-1: 6787c67a00477f4be33187452f44fcde0079b7f2 SHA-256: f946df757296a8895994df4a9e8bd48aa9a273d13dc5cd0b707b1bf15642a63a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action phrase, heavily suggesting a lure for game cheats or hacks. The primary URL, http://netcdn.co/app/431946152/robux-cheat-download-game-hack, is directly associated with a 'robux cheat download' lure. While no scripts were extracted, the PDF structure and embedded URLs indicate a malicious intent to redirect users to potentially harmful content or downloads.

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/robux-cheat-download-game-hack PDF link annotation
    • http://autoskola-scp.com/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/can-you-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-free-spin-download_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/robux-com-free_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-free-spins-save_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-hack-version-download_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/pubg-uc-deducted_GM1330123889.pdfIn PDF document text
    • http://autoskola-scp.com/files/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-can-i-fix-the-hack-for-roblox_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/roblox-secret-cheat-codes-for-music-its-raining-tacos_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/roblox-hack-youtube-2021_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-free-spin-and-coin-links_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_off00002cb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB2 22088 bytes
SHA-256: f45cb3caf65cf5583925f46ff3051184a1fef28ff63337bce6dd93deb6211740
font_01_sfnt_off00005d59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D59 19400 bytes
SHA-256: b8e8aa6b19b4ec49852844c8e76df002148677de88a01f39a4a997fbf1cf190d

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