Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cb73774eb655fe7…

MALICIOUS

PDF

34.9 KB Created: 2021-06-28 08:38:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b39fa394148fd688ef58e1bb80a24063 SHA-1: 1b0e584602d2bb69bb0ae79282e688907a5e0896 SHA-256: 9cb73774eb655fe77e10b6cc1eae27a3efc65ac3415938c29b5ab04e84bbdad1
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.co/app/431946152/roblox-mad-city-hack-rank-april-game-hack PDF link annotation
    • http://library.imz.or.id/repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/cmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/do-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/ive-been-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-hack-2021-no-survey_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-32-mod-hack-unlimited_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/roblox-online-free-no-download_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/how-to-get-the-free-items-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • http://library.imz.or.id/repository/descargar-hacks-para-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/meep-city-kid-gives-free-robux_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-vip-hack_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • http://library.imz.or.id/repository/roblox-hair-for-free_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-game-hack-apk_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_off00002e9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E9D 22712 bytes
SHA-256: 91de2033035705d178105e4d2974a0c67806b00276d0280a10fbeeebdcb898e6
font_01_sfnt_off00006180.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6180 19608 bytes
SHA-256: 67ebee221348bd9333936a38d90ce42344417cebafe362f36c53e64ae6419bd7

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