Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eba813259d2bb35…

MALICIOUS

PDF

34.7 KB Created: 2021-06-20 05:07:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8004fd0fceb35d48477bc2706f745ea9 SHA-1: 963dc1b0305a0390c6d175f03c67049ede2f89a7 SHA-256: 2eba813259d2bb352594b49ae16e70338a75e8357a989024c9fa0340652ef7cf
82 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and text that lure the user with promises of game hacks and free in-game currency, such as 'Evil Hacker Game Roblox' and 'robux-com-free'. The presence of a 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggests the document may be part of a multi-stage attack where a password is provided to decrypt a malicious payload. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood 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/evil-hacker-game-roblox-game-hack
    • http://elibrary.smknesbu.sch.id/repository/free-spin-in-coin-master_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/robux-com-free_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-more-free-coins-on-coin-master_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/ways-to-get-robux_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-coins-spins_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-minecraft-thumbnails_GM479516143.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-roblox-bundles-2021_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-spin-whatsapp-group_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/roblox-earn-robux_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/500-free-coin-master-spins_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-robux-no-verification-no-survey_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-robux-redeem-codes_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-robux-generator-no-human-verification-or-password_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/asshurtv2-roblox-hack_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-foxy-food_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/no-scam-free-robux_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-fire-tik-tok_GM835599320.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-t-shirt-decals-roblox_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/what-happens-if-you-go-on-a-free-robux-website_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/minecraft-wurst-hacked-client_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030df.bin
aa1b34fd4e13cf4c7159d0e3336d7b84f1fb30cd8f3542c1911cb8f89056072f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x30DF 22236 bytes
font_01_sfnt_off0000624e.bin
ccd73bbe1b558899a59c6d411cee9862fd33bf87a8e40a4204ccd6f9b4f8289f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x624E 19148 bytes

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