Malicious PDF — malware analysis report

Static analysis result for SHA-256 e38fdb85a353a4f5…

MALICIOUS

PDF

42.6 KB Created: 2021-05-10 14:18:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0d6fac319112b11bd4e80ddea19ce886 SHA-1: 6954f020777a0be4ea40774a02c62f440413fd84 SHA-256: e38fdb85a353a4f55cea77e08ece7b728499048db73363b64ccbaa7082fd75be
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a heuristic indicating it links to a 'free generator / game hack' redirector, specifically pointing to 'https://netcdn.xyz/app/479516143/is-windows-10-minecraft-free-game-hack'. This lure is designed to trick users into clicking the link, likely leading to a malicious website or download. The ML classifier also strongly flagged this PDF as malicious.

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/479516143/is-windows-10-minecraft-free-game-hack PDF link annotation
    • http://library.yamasi.ac.id/repository/how-to-get-roebucks_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-link-for-spins_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-e-free_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-free-spin-app-apk_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/roblox-redeem-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/android-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/can-i-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-pet-food-hack_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/como-hackear-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-roblox-boy-hair_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/bad-minecraft-free_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-get-free-admin-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/minecraft-toolbox-premium-apk_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-robux-generator_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/old-roblox-accounts-for-free_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_003_off000046f5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46F5 26920 bytes
SHA-256: ba8b52758de0a12856de219f31d8989d9272d033c5a0c35997a7c9be267dbdee
font_01_sfnt_off00008374.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8374 18524 bytes
SHA-256: 171145d693b5cd868e8a770b6e84adad06c35cb86194a4ae2474cf18c95c1c24

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