Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ecd8d4dcd43c49b…

MALICIOUS

PDF

34.0 KB Created: 2021-07-04 21:21:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0f1ea2e338666c52f0aea74834be302d SHA-1: 1f2f751231877de9cd7c5074712ff1157ddb0e34 SHA-256: 3ecd8d4dcd43c49b58e779e8771223036bdfd4a8ae373220d80b6fbb3ef3eb7f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/roblox-hack-ga-game-hack PDF link annotation
    • http://handimanlibrary.org/repository/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://handimanlibrary.org/repository/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://handimanlibrary.org/repository/how-to-change-your-username-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • http://handimanlibrary.org/repository/free-robux-stream_GM431946152.pdfIn PDF document text
    • http://handimanlibrary.org/repository/roblox-hack-kontra-blox_GM431946152.pdfIn PDF document text
    • http://handimanlibrary.org/repository/how-to-hack-a-group-in-roblox_GM431946152.pdfIn PDF document text
    • http://handimanlibrary.org/repository/free-spins-coin-master-links-no-human-verification_GM406889139.pdfIn PDF document text
    • http://handimanlibrary.org/repository/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://handimanlibrary.org/repository/robux-script-free_GM431946152.pdfIn PDF document text
    • http://handimanlibrary.org/repository/roblox-free-money-in-jailbreak_GM431946152.pdfIn PDF document text
    • http://handimanlibrary.org/repository/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • http://handimanlibrary.org/repository/download-coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • http://handimanlibrary.org/repository/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://handimanlibrary.org/repository/kristjonz-15k-robux-reward-hack-tutorial_GM431946152.pdfIn PDF document text
    • http://handimanlibrary.org/repository/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • http://handimanlibrary.org/repository/how-to-get-free-clothes-on-roblox-without-bc_GM431946152.pdfIn PDF document text
    • http://handimanlibrary.org/repository/free-jordan-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://handimanlibrary.org/repository/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • http://handimanlibrary.org/repository/is-free-robux-real_GM431946152.pdfIn PDF document text
    • http://handimanlibrary.org/repository/commands-to-hack-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_off00002f47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F47 22260 bytes
SHA-256: 5a2ab55d4cd1f03ac331b1f21b4260f1e076da44b2e68c626fdee02c051a8b47
font_01_sfnt_off000060d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D7 18656 bytes
SHA-256: 54ca192054bc8c657e8a7f9e976e5c419448410dec473bf437c4f06f1192f6de

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