Malicious PDF — malware analysis report

Static analysis result for SHA-256 d23eecba1fcc7b90…

MALICIOUS

PDF

34.5 KB Created: 2021-07-03 17:23:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 185f2e22cebfd8311eaf54b4dde444f9 SHA-1: fff5584ffa8714a822bd4101b67567c23c9c0cfa SHA-256: d23eecba1fcc7b901d872a742bf0f6e785a3d0e981f623298ccf828b450f8dc4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document employs a lure related to free game currency and hacks for popular games like Roblox. It contains multiple embedded URLs, with http://netcdn.tw/app/431946152/how-to-get-free-premium-roblox-game-hack being a primary indicator of a redirection to potentially malicious content. The ML classifier also strongly flagged this PDF as malicious, suggesting it is designed to lead users to exploit or scam sites.

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/how-to-get-free-premium-roblox-game-hack PDF link annotation
    • https://digilib.stimlog.ac.id/repository/free-robux-zethp_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/google-play-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/como-evitar-ser-hackeado-en-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/gameblox-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-future-tycoon-money-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/venesix-roblox-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/script-cheat-roblox-mad-city_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-hack-download-ios_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-ad-maker-free_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-obby_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/optifine-mcpe_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-hack-without-verification-or-downloading-apps_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/get-free-robux_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_off00002f6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F6C 22136 bytes
SHA-256: aa6c15fff47307585c49606b6628e902a80266052dedffb18d46b5e2172c58ee
font_01_sfnt_off0000607c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x607C 19592 bytes
SHA-256: 8d0174b0934bd13f73c8324677ef321856a80226dce412d68411a4eff9948ea0

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