Malicious PDF — malware analysis report

Static analysis result for SHA-256 e13fb6831d1aded0…

MALICIOUS

PDF

47.8 KB Created: 2021-06-04 05:00:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 1b66547a2d688c100b2ab916c8c15a97 SHA-1: 69407deb69bb88b8c175df42862a51d5c6278a06 SHA-256: e13fb6831d1aded02453cfe103ff7d3d304c3093cdf7bc0e2a1c828092d13e05
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a clear lure related to "Roblox Hack Site" and embeds a URL pointing to a suspicious domain. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to trick the user into downloading a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

Heuristics 4

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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.online/app/431946152/roblox-hack-site-game-hack
    • http://www.perpustakaan.smansa-bdl.sch.id//repository/extra-free-spins-for-coin-master_GM406889139.pdf
    • http://www.perpustakaan.smansa-bdl.sch.id//repository/coin-master-daily-free-rewards_GM406889139.pdf
    • http://www.perpustakaan.smansa-bdl.sch.id/repository/free-robux-generator-2021-no-human-verification_GM431946152.pdf
    • http://www.perpustakaan.smansa-bdl.sch.id//repository/is-minecraft-free-on-pc_GM479516143.pdf
    • http://www.perpustakaan.smansa-bdl.sch.id/repository/tiktok-free-likes-and-followers-2021_GM835599320.pdf
    • http://www.perpustakaan.smansa-bdl.sch.id/repository/how-to-hack-roblox-accounts_GM431946152.pdf
    • http://www.perpustakaan.smansa-bdl.sch.id/repository/block-best-robux_GM431946152.pdf
    • http://www.perpustakaan.smansa-bdl.sch.id/repository/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdf
    • http://www.perpustakaan.smansa-bdl.sch.id//repository/how-to-get-free-robux-2021_GM431946152.pdf
    • http://www.perpustakaan.smansa-bdl.sch.id//repository/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdf
    • http://www.perpustakaan.smansa-bdl.sch.id//repository/is-tiktok-free-on-iphone_GM835599320.pdf
    • http://www.perpustakaan.smansa-bdl.sch.id//repository/coin-master-free-spin-daily-link_GM406889139.pdf
    • http://www.perpustakaan.smansa-bdl.sch.id/repository/roblox-no-download-hack_GM431946152.pdf
    • http://www.perpustakaan.smansa-bdl.sch.id//repository/free-coin-master-spins_GM406889139.pdf
    • http://www.perpustakaan.smansa-bdl.sch.id//repository/mcpe-master-hack-unlimited-coins_GM406889139.pdf
    • http://www.perpustakaan.smansa-bdl.sch.id/repository/is-windows-10-minecraft-free_GM479516143.pdf
    • http://www.perpustakaan.smansa-bdl.sch.id/repository/coin-master-hack-pc-2021_GM406889139.pdf
    • http://www.perpustakaan.smansa-bdl.sch.id/repository/how-to-hack-people-in-roblox_GM431946152.pdf
    • http://www.perpustakaan.smansa-bdl.sch.id//repository/roblox-free-pants_GM431946152.pdf
    • http://www.perpustakaan.smansa-bdl.sch.id/repository/coin-master-connection-lost_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005230.bin
e5538d0a92d386d8a8880a6eb1c0a09a4bd0567dbce6d96a50c03802ef965691		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5230 25640 bytes
font_01_sfnt_off00008e20.bin
1d0cb1023eaa225682b8e7a2c8df4e4c96545ba7eedaf3d9844e51183e9ca189		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E20 2824 bytes
font_02_sfnt_off000097cc.bin
baa68e8b80fe17984eb0f5893287011db8c451c65a8bba41303beeb2aadfa952		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97CC 18408 bytes

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