Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f408c20e3d2f72c…

MALICIOUS

PDF

43.1 KB Created: 2021-05-13 03:04:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 27b4885bf25f90794c1687b80ac3b586 SHA-1: 6c076e5c969507e83c49cc75c3f3ed494b8215b4 SHA-256: 8f408c20e3d2f72c095fffd5e6d63bd4b4c6047b823d6226d2069c3a62156012
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains an embedded URI and multiple other URLs, with the primary one being 'https://netcdn.xyz/app/406889139/free-spins-on-coin-master-link-game-hack'. The document body and heuristics suggest a lure for free game items, likely to trick users into downloading a malicious payload. The presence of a 'password-protected archive' lure heuristic indicates an attempt to bypass security controls by encrypting the payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/406889139/free-spins-on-coin-master-link-game-hack
    • http://e-library.dharmawangsa.ac.id/repository/password-free-roblox-accounts_GM431946152.pdf
    • http://e-library.dharmawangsa.ac.id/repository/robloxfun-com-generator_GM431946152.pdf
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-free-spin-link-today-16-11-2021_GM406889139.pdf
    • http://e-library.dharmawangsa.ac.id/repository/roblox-premium-free_GM431946152.pdf
    • http://e-library.dharmawangsa.ac.id/repository/plug-toolbox-for-minecraft-free-ios_GM479516143.pdf
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-free-spins-link-today-haktuts_GM406889139.pdf
    • http://e-library.dharmawangsa.ac.id/repository/free-spin-and-daily-news-coin-master_GM406889139.pdf
    • http://e-library.dharmawangsa.ac.id/repository/roblox-hack-unlimited-robux_GM431946152.pdf
    • http://e-library.dharmawangsa.ac.id/repository/100-free-coin-master-spins_GM406889139.pdf
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-hack-unlimited-spins_GM406889139.pdf
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-free-spins-apk_GM406889139.pdf
    • http://e-library.dharmawangsa.ac.id/repository/free-robux-pins_GM431946152.pdf
    • http://e-library.dharmawangsa.ac.id/repository/daily-free-spins-on-coin-master_GM406889139.pdf
    • http://e-library.dharmawangsa.ac.id/repository/promo-codes-for-free-robux_GM431946152.pdf
    • http://e-library.dharmawangsa.ac.id/repository/como-hackear-coin-master-gratis_GM406889139.pdf
    • http://e-library.dharmawangsa.ac.id/repository/minecraft-115-2-hacks_GM479516143.pdf
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-daily-free-spins-link-today-facebook_GM406889139.pdf
    • http://e-library.dharmawangsa.ac.id/repository/roblox-free-robux-com_GM431946152.pdf
    • http://e-library.dharmawangsa.ac.id/repository/robux-free-2021_GM431946152.pdf
    • http://e-library.dharmawangsa.ac.id/repository/facebook-coin-master-free-spins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004cb1.bin
e6290b161a26c6a8d1af0c73537ad4149a3911803cfcc8f7357130dc26e3b3f5		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CB1 25096 bytes
font_01_sfnt_off000086b8.bin
892ebf3b86ae534fd3f474e2c239da2a9bb4dc91f8225dc09222a78aadec1336		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86B8 18056 bytes

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