Malicious PDF — malware analysis report

Static analysis result for SHA-256 fea0d5c3277c918f…

MALICIOUS

PDF

45.4 KB Created: 2021-05-10 20:40:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 86d83d06b97c0e00347a72a82e86d188 SHA-1: dec5d237c2639e29a4b4543333944c3483eb49b1 SHA-256: fea0d5c3277c918fc537af7126a6ed9b64113b96549b7fcb5c2f5ab022636b82
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains a high-confidence heuristic indicating it links to a 'free generator / game hack' redirector. The document body and extracted URLs reinforce this, showing lures for 'free Robux' and game hacks. The primary malicious action is directing the user to the URL https://netcdn.xyz/app/431946152/get-robux-now-game-hack, which likely hosts further malicious content or phishing attempts.

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 https://netcdn.xyz/app/431946152/get-robux-now-game-hack PDF link annotation
    • https://fib.ub.ac.id/sac/repository/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/como-hackear-el-juego-coin-master_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-mod-apk-2021_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/cm-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/buy-robux-free_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/optifine-mcpe_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/need-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-robux-generator-no-verification_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_off00004a41.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A41 30464 bytes
SHA-256: 9ca3dc632a1257e91956f8eb4f6d75b9fe3a96498f8431452f83a706128f137b
font_01_sfnt_off00008f83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F83 18120 bytes
SHA-256: 9c3ce8d7b0d85fdff3917ffd210604c934acd68a905ece7635225fd3f48c16bc

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