Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c0702f5a9f738ad…

MALICIOUS

PDF

41.9 KB Created: 2021-05-12 00:05:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: aea82eb0a55468a96142f0ca8948bd28 SHA-1: 18d2887c76496aa1e9c76815fdea5b305c058cdc SHA-256: 4c0702f5a9f738adbd004953b8d0184ab573bdde0573c55598a013069501d260
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 0.9971

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/best-free-minecraft-servers-game-hack PDF link annotation
    • https://mitsubishijogjaku.com/ckfinder/userfiles/files/coin-monster_GM406889139.pdfIn PDF document text
    • https://mitsubishijogjaku.com/ckfinder/userfiles/files/no-human-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://mitsubishijogjaku.com/ckfinder/userfiles/files/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://mitsubishijogjaku.com/ckfinder/userfiles/files/my-robux_GM431946152.pdfIn PDF document text
    • https://mitsubishijogjaku.com/ckfinder/userfiles/files/hack-my-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://mitsubishijogjaku.com/ckfinder/userfiles/files/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • https://mitsubishijogjaku.com/ckfinder/userfiles/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://mitsubishijogjaku.com/ckfinder/userfiles/files/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • https://mitsubishijogjaku.com/ckfinder/userfiles/files/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
    • https://mitsubishijogjaku.com/ckfinder/userfiles/files/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • https://mitsubishijogjaku.com/ckfinder/userfiles/files/free-card-link-coin-master_GM406889139.pdfIn PDF document text
    • https://mitsubishijogjaku.com/ckfinder/userfiles/files/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • https://mitsubishijogjaku.com/ckfinder/userfiles/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://mitsubishijogjaku.com/ckfinder/userfiles/files/free-minecraft-java-edition-account_GM479516143.pdfIn PDF document text
    • https://mitsubishijogjaku.com/ckfinder/userfiles/files/free-spins-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • https://mitsubishijogjaku.com/ckfinder/userfiles/files/como-hackear-el-juego-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • https://mitsubishijogjaku.com/ckfinder/userfiles/files/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • https://mitsubishijogjaku.com/ckfinder/userfiles/files/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://mitsubishijogjaku.com/ckfinder/userfiles/files/coin-master-hack-without-verification-or-downloading-apps_GM406889139.pdfIn PDF document text
    • https://mitsubishijogjaku.com/ckfinder/userfiles/files/coin-master-spin-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://www.freenom.comHeyIn 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_off0000499e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x499E 25096 bytes
SHA-256: 497f642f2dc926f68d05fae8a2672c1c142cf84582d929aa5db6a6ee9cfa29e1
font_01_sfnt_off00008287.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8287 17896 bytes
SHA-256: c529f757d6b4a4f9c7840ecb5b6035c813da3045ee3b560268268dab20db1aa9

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