Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f4f2a24b3d8ac82…

MALICIOUS

PDF

33.8 KB Created: 2021-07-05 20:26:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1736d20b717c91f0714a0890842f3181 SHA-1: e804031988b7b8bd99658e7462e623eede46d25a SHA-256: 9f4f2a24b3d8ac82d948cb430055f60ed94646c6fb36033ca5c8da2decaba94d
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/generator-robux-game-hack PDF link annotation
    • http://lib.uho.ac.id/library//repository/minecraft-java-edition-key-free_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/rbx-sites_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-make-your-own-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/get-free-spins-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-spins-link-2021-haktuts_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-hack-software-download_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-code-for-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coinmaster-twitter_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-pc-game-free-download_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/robux-premium_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-spins-hack-link_GM406889139.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_off00002f65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F65 22096 bytes
SHA-256: 144060fee773cd7d19c69a811cd2e6c0aebfb14b7308af9060d118f6ade27e8b
font_01_sfnt_off0000600e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x600E 18656 bytes
SHA-256: 57cabb2f3cda11ced9ca044b623aaf1782b356c2026ac93d88fdaf234d1ce0d8

Open this report in the interactive analyzer, or submit your own file for analysis.