Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ee9f690bbb341c7…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 11:13:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d6711eb42962a6a8f33ffcce4c6d853c SHA-1: d95700ae9c94865c155235330285a71cc1bfac6d SHA-256: 8ee9f690bbb341c7adea90bf94af17b78dd2d76fb4e2f10d95cce7f7b0f124dd
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a website offering 'free generators' and 'game hacks', specifically mentioning Coin Master. The ML classifier strongly flagged this PDF as malicious. The primary URL, http://netcdn.tw/app/406889139/coin-master-free-spons-apk-2021-game-hack, is likely the initial landing page for a phishing or malware distribution attempt.

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/406889139/coin-master-free-spons-apk-2021-game-hack PDF link annotation
    • http://library.smpn2-byl.sch.id//repository/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/free-roblox-girl-clothes_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/roblox-free-executor_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/coin-master-hack-app-android_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id/repository/growbux-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/coin-master-free-spins-moonactive_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id/repository/free-roblox-dump-account-june-2021_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id/repository/roblox-promo-codes-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/how-to-make-my-own-coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/coin-master-free-spins--spins_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/www-cheatsk-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/roblox-robux_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/coinmaster-hack_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/coin-master-free-spins-link-2021-no-verification_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/rbxdemon_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/minecraft-diamond-finder-hack_GM479516143.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
stream_002_off00002fd7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FD7 23172 bytes
SHA-256: 00817b20608acc4792154f31ff7ab7b750dcfcd3774c5eed2154c54ba3ff27ca
font_01_sfnt_off0000640f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x640F 18748 bytes
SHA-256: 5e77ef61f71b9edceb1db79b59856649b40968d05cf737e8f2ff8c48d385844d

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