Malicious PDF — malware analysis report

Static analysis result for SHA-256 c304bc4c6551f1ff…

MALICIOUS

PDF

33.5 KB Created: 2021-06-18 03:12:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f9abfdaf3bbbd9aaf07b9058c9b179d8 SHA-1: 15f61e9a0b22a92210376b57884364e44bfd412e SHA-256: c304bc4c6551f1ff37a8f0749b43d25f76a10a232e4f821ae5c7ed36939acb82
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic firing for a "GAME_HACK_REDIRECT_LURE" and an embedded URI pointing to a "cheat-menu-roblox-game-hack" URL. The document body also contains similar lures and the primary URL. This suggests the document is designed to trick users into visiting a site that likely hosts malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/cheat-menu-roblox-game-hack PDF link annotation
    • http://library.fk.upnvj.ac.id/repository/how-much-tiktok-free-followers_GM835599320.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-gang_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-roblox-account-with-2021-robux_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/descargar-roblox-hackeado-adopt-me-2021_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/best-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-music-gui-hack_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-roblox-accounts-with-bc-and-robux_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-hack-ios-jailbreak_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/tiktok-free-movie-website_GM835599320.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-hack-ios-no-verification_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/youtube-hack-de-juegos-apk-robux_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-minecraft-premium-account_GM479516143.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-get-free-robux-on-roblox-ipad_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-play-minecraft-for-free_GM479516143.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_off00002adc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ADC 22756 bytes
SHA-256: 83627e2f445be845643a10b5b401d4bb39a986278821e7880784a8cedd0f6e4f
font_01_sfnt_off00005df4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF4 19092 bytes
SHA-256: 482d4233b6b02242a05cbe04d8f15bea7bcbd9031d3827590c9b876ccaaac580

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