Malicious PDF — malware analysis report

Static analysis result for SHA-256 e270b391fe4a3d7a…

MALICIOUS

PDF

44.1 KB Created: 2021-05-11 06:55:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: b0e2abdfabdb39512e5a6b07651c75b3 SHA-1: 436a5c6b6f45dfe083e51a508f44717b8707cb71 SHA-256: e270b391fe4a3d7a0dbe279830ef0db35daf81af54fa53eda64a1f7f0c31eecd
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-confidence heuristic firing for a 'free generator / game hack' lure, directing users to a suspicious URL. The document body, though heavily obfuscated, contains references to 'Windows 10 Minecraft Free With Java' and the same suspicious URL, reinforcing the lure. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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/windows-10-minecraft-free-with-java-game-hack PDF link annotation
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/free-spin-link-in-coin-master-game_GM406889139.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/monttechscom-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/free-card-link-coin-master_GM406889139.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/rbx-free-robux_GM431946152.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/what-is-wurst_GM479516143.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/coin-master-unlimited-spin-hack_GM406889139.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/is-coin-master-hacks-safe_GM406889139.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/get-free-robux-generator_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_off00004d42.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D42 25684 bytes
SHA-256: 9dbcb9b0aaad4ff30f96285dbc95dc6d353c915bdc5cf2c24f43c739b1e29072
font_01_sfnt_off0000883b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x883B 18972 bytes
SHA-256: 9d6b9c54d2a131b4fb739230225618891bd38f691818b7a412f84340786b5520

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