Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5de90b2b34193bb…

MALICIOUS

PDF

35.6 KB Created: 2021-06-20 09:37:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 90ea0241e0c9dc22ca1bfb234c852a57 SHA-1: 6b09abb4e444c7c60395657b10330757aacf4dda SHA-256: e5de90b2b34193bb95c8cc4b94e5a44a073d208aa4035194b08eafb05c2a9e3f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external resources, including one directly advertising "free-roblox-exploits-2021-game-hack". The presence of a "Password-protected archive handoff" heuristic suggests the document may be intended to trick users into downloading an archive that requires a password, likely to bypass security scanning. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/free-roblox-exploits-2021-game-hack
    • http://elibrary.smknesbu.sch.id/repository/you-promised-my-son-free-robux_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-hack-without-verification-code-2021_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-do-you-get-roblox-for-free_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-free-robux-no-scam_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-roblox-accouts-that-work_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-hack-ios-10_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/get-800-free-robux_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-roblox-hack-us_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/hacks-for-roblox-parkour_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/roblox-free-robux-no-download_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/roblox-katana-and-knife-hack_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-spins-2021_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-spin-link_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-coins-app_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/roblox-free-robux-codes_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-roblox-toy-codes-not-used_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/2021202168-roblox-code-hack_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-to-hack-roblox-promo-codes_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-free-cards-sets-for-coin-master_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-fire-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003149.bin
4599ff68a6f4db37895e59670555e5cd0a3baffa259bad5d13eb5e4ee08ccbfd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3149 22912 bytes
font_01_sfnt_off000064d1.bin
832e16b0ec40ffc630b038f3238c4404006d6dcf1c31b28b02557b4c0ad72767		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64D1 19452 bytes

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