Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f45e869156679ea…

MALICIOUS

PDF

33.2 KB Created: 2021-07-05 15:50:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5526f66860666b85a0f589fc3df1a7ed SHA-1: 9948f49c5b026eed0bf5805c78affd8165538ffb SHA-256: 7f45e869156679ea99795229b43aed29498cc4d1230c971efc60011feddb2296
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'free Robux' for the game Roblox, directing users to a suspicious URL. This indicates a phishing or scam attempt, likely to lead users to a site that may host malware or attempt credential harvesting. No scripts were extracted, but the embedded URI and the ML classifier strongly suggest malicious intent.

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.tw/app/431946152/how-do-you-get-free-robux-on-roblox-game-hack PDF link annotation
    • http://www.perpusffup.or.id/repository/coin-master-free-spins-link-deutsch-ios_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/salvage-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/roblox-free-tbc-account_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/robux-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/coin-master-hack-version-download_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/app-store-games-free-download-roblox_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-preston-roblox-merch-catolog_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/roblox-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/how-to-stop-hackers-from-hacking-on-roblox_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_off00002a85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A85 22268 bytes
SHA-256: fdada89434b5de73bb2824e50434068a28a1c9005522306e04730c2988c57266
font_01_sfnt_off00005bc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BC9 19388 bytes
SHA-256: bfe8901ed3b01612589fbf5cddaaa2e97b8ca06efec900f58c792d736f26eaab

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