Malicious PDF — malware analysis report

Static analysis result for SHA-256 599702a030e85b22…

MALICIOUS

PDF

35.1 KB Created: 2021-07-06 13:19:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2e10bccf288023e1c1fd19fff309f3fb SHA-1: ec073a70746904388d50417fec69f35801bb0ce7 SHA-256: 599702a030e85b222c08de5324d9fd58a7f99a4a3b7c1634d8c349ae7d461ca9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs and a prominent link in its body text, all related to game cheats and free currency. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests the document may be intended to trick users into providing passwords for encrypted malicious content. The ML classifier also flagged this PDF as malicious with high confidence.

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.tw/app/406889139/coin-master-free-100-spin-link-game-hack
    • http://elibrary.smknesbu.sch.id/repository/free-robux-working_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-free-tokens-asssassin-roblox_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-hack-activegamer_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/simple-free-robux_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/roblox-how-to-open-cheat-engine_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/1-minute-free-robux_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/comment-avoir-un-hacker-sur-jailbreak-roblox_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdf
    • http://elibrary.smknesbu.sch.id/repository/roblox-phantom-forces-cheats-2021_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/roblox-exploit-free-executor_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-to-hack-any-roblox-game-2021_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-coins-link-2021_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/earn-robux-today_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-really-working-no-password-no-verify-robux-generator_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/hacked-clients-for-roblox_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/download-coin-master-hack-apk_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-robux-codes-get-robux-absolutely-free_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/get-free-robux-no-verification_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/guess-the-song-roblox-cheat-sheet_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/urbis-roblox-money-cheat_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000313e.bin
1c83ea9d5f335213bdc30e75c64f9dc99e02c3fe6efaa728e57887eab824f13a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x313E 23152 bytes
font_01_sfnt_off0000657e.bin
cfc54751512bc7e110264f73785061a475bf2a76f79571e558b4b9cd93d36ac5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x657E 18620 bytes

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