Malicious PDF — malware analysis report

Static analysis result for SHA-256 a92c690fb91316a9…

MALICIOUS

PDF

49.3 KB Created: 2021-06-04 05:19:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 305d6da0f56ff91c6570bf70586b67ea SHA-1: eccb8d85a1ae65757f6795f921d14beb7bb78ae0 SHA-256: a92c690fb91316a91a4f3a198d5599495fd7df97c5ef072f3eabc4781289bd37
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a fake CAPTCHA lure and a call-to-action button, directing users to a URL promising game hacks. This is a common social engineering tactic to entice users into downloading malicious payloads. The embedded URLs suggest a focus on game-related exploits and cheats.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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-hack-ios-apk-game-hack PDF link annotation
    • http://library.yamasi.ac.id//repository/robuxhub-net_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/card-hack-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/getrobux-now_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/minecraft-apk-114-4_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/minecraft-hacker-mask_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-heaven-daily-free-spins-and-coins-links_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/optifine-mcpe_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/roblox-redeem_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/aristois-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-change-your-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-redeem-card-codes-free_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-33-hack-version-download_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/60-free-spins-on-coin-master_GM406889139.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_off0000530e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x530E 25428 bytes
SHA-256: 7b5678f14d071d0530eb091a94c07c2d27cbaf6f68f1b03154b76022e6317d50
font_01_sfnt_off00008d22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D22 7332 bytes
SHA-256: d811e0aca85f3b94c42cd1240eec68b8eb378f3d8be5e408d3f6abd0f11f834d
font_02_sfnt_off00009f3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F3B 17892 bytes
SHA-256: c18f05485291fd9dd2d982fa815b69c2a1f9afc9df9b250f8ccfc4cbb8514acf

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