Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ce99ce7d653766f…

MALICIOUS

PDF

42.6 KB Created: 2021-05-10 23:48:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 36022ca94da379158a4afaca03bf022e SHA-1: 83a6555061ae8a9143a74615d7a49deb9ff727c2 SHA-256: 9ce99ce7d653766f9e55e40c6a11a64cbd08bf0391ab4793367a97b404b95ed1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link disguised as a 'Coin Master Hack' generator, which is a common lure for malicious downloads or phishing. The ML classifier strongly flagged this PDF as malicious, and the embedded URLs point to suspicious domains. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/coin-master-hack-version-2021-download-game-hack PDF link annotation
    • http://lib.baruna-husada.ac.id//repository/descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/202100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/free-promo-codes-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/gamehunters-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/generator-robux_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/claim-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/play-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/free-robux-please_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/minecraft-bedrock-edition-hacks_GM479516143.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/hack-coin-pro-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/coin-master-hack-unlimited-spins-apk_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/android-coin-master-3433-apk-hack_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/coin-master-hack-apk-android-1_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/win-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/coin-master-hack-2021_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
stream_003_off00004aaf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AAF 24384 bytes
SHA-256: 829ff30cd3418b37734bebf5bba6ee7f7e8236678917ad3dfc303c205fe888a9
font_01_sfnt_off00008246.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8246 18832 bytes
SHA-256: cd88061e10041738ec7274ba91306f286ba33e5d15dbcf077940b1575ec855e5

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