Malicious PDF — malware analysis report

Static analysis result for SHA-256 9711f7b55084a782…

MALICIOUS

PDF

47.5 KB Created: 2021-06-03 22:41:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 43d2e37c328990a9af6e61662b9bd5cb SHA-1: 91c56295294561371eee6405f1c4753f834baeba SHA-256: 9711f7b55084a7828c0beee7ecbba3d3088e221dd25aa2acfca3b27b596aa90f
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 0.9769

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 https://netcdn.online/app/406889139/coin-master-shield-hack-game-hack PDF link annotation
    • http://library.imz.or.id/repository/multiplayer-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-appsfor-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/try-minecraft-free_GM479516143.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.imz.or.id/repository/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.imz.or.id/repository/sites-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-hack-for-android_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/minecraft-free-play-now_GM479516143.pdfIn PDF document text
    • http://library.imz.or.id/repository/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.imz.or.id/repository/robux-without-verification_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-free-spin-and-coin-link-today_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/today-coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://library.imz.or.id/repository/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/minecraft_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005286.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5286 27060 bytes
SHA-256: fd8a499916a15a10fd967ca0c73a8bed2b385791e714c11c61af7be6e31ca74e
font_01_sfnt_off00008d5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D5E 2880 bytes
SHA-256: b053084cafd01c649462d87667ba56c569d6480ce60e7d20ae57ef6124cf178e
font_02_sfnt_off00009749.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9749 18128 bytes
SHA-256: 2773020a9ca51f28bcb030d2519f478b200dd757f17da2a4e62f9d950a58fe27

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