Malicious PDF — malware analysis report

Static analysis result for SHA-256 66295519ff596829…

MALICIOUS

PDF

34.4 KB Created: 2021-06-30 05:24:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c9eaab514113a75b11739717e0f75117 SHA-1: d9c7c7cfb287d14275de756a9bd885f0ea7d4d67 SHA-256: 66295519ff596829df5d1923e84a47bbce0196f9b0a730512333657bba5c6be2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The 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. The embedded URL likely leads to a site designed to exploit user interest in free game items, potentially for credential harvesting or malware delivery.

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/new-obby-gives-you-free-robux-game-hack PDF link annotation
    • https://library.uigm.ac.id/repository/roblox-how-to-play-games-for-free_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-hack-apk-android-oyun-club_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-codes-for-toys-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-roblox-clotyhes_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/infinity-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-black-and-white-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-hack-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/spin-link_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-with-jus-tusername_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-mega-gift_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/city-free-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E21 22452 bytes
SHA-256: 7d02f398fb956a9b39508e9a0aa34af7c4670d55e7a3bb179f64767534f2f8c9
font_01_sfnt_off00006020.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6020 19456 bytes
SHA-256: ebe59d4fbf4df064be09a821363b55588c4b224f576ea8933a2b28adf5a34807

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