Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7ae4fa8c07a3cb2…

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 17:17:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 0ac437804645dfb2da487f5850b6e1fb SHA-1: 6d76fb398b86639d4f761b0194eec29ab2cf584d SHA-256: c7ae4fa8c07a3cb2954ba9a7b6665fc192a86ea0f2ba8e66174f178de3f47a1b
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.tw/app/406889139/coin-master-free-spins-activegamer-game-hack PDF link annotation
    • http://library.forda-mof.org/katalog/repository/roblox-dominus-free_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-free-executor_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-cheat-engine-btools_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-minecraft-skins-pc_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-make-a-cool-roblox-avatar-for-free_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-games-free-download_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-many-free-spin-links-is-there-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-download-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-hack-coin-master-using-es-filer_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/wurst-115-2_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-ps3-free-download_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/install-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-easy-and-fast_GM431946152.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_off0000307f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x307F 22956 bytes
SHA-256: 969a9c2814666d2f27e461ba5d7523980dd8b130dff4c9c38a07ba15655e0162
font_01_sfnt_off00006425.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6425 18548 bytes
SHA-256: 85433ac8e2cde4db0bf7edc9f1398718ea4df069310ae2c497be062e8b4ae894

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