Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e5de33649f0031e…

MALICIOUS

PDF

49.9 KB Created: 2021-06-04 03:36:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c040ee8edfb7ace2b069f8ee9105742b SHA-1: c7c1a5403ddf98200574367d97365f77153a2aff SHA-256: 7e5de33649f0031e8065a06e3760af8762020f437cb1022935f02064147bed0a
82 Risk Score

Malware Insights

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

The PDF document displays a fake CAPTCHA or human verification prompt to trick the user into interacting with it. It also contains a call-to-action phrase and an embedded URI pointing to a website that likely hosts a malicious payload or further phishing content. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

Heuristics 4

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/406889139/coin-master-ids-for-free-spins-game-hack
    • http://lib-smansumsel.sch.id/repository/coin-master-hack-2021-ios-download_GM406889139.pdf
    • http://lib-smansumsel.sch.id/repository/how-to-get-2021-robux-for-free_GM431946152.pdf
    • http://lib-smansumsel.sch.id/repository/how-to-get-minecraft-for-free-on-nintendo-switch_GM479516143.pdf
    • http://lib-smansumsel.sch.id/repository/coin-master-link-daily-get-free-spins-and-coins_GM406889139.pdf
    • http://lib-smansumsel.sch.id/repository/official-coin-master-free-spins_GM406889139.pdf
    • http://lib-smansumsel.sch.id/repository/daily-free-spins-coin-master-2021_GM406889139.pdf
    • http://lib-smansumsel.sch.id/repository/free-robux-easy-and-fast_GM431946152.pdf
    • http://lib-smansumsel.sch.id/repository/how-to-download-minecraft-for-free_GM479516143.pdf
    • http://lib-smansumsel.sch.id/repository/is-there-a-free-version-of-minecraft_GM479516143.pdf
    • http://lib-smansumsel.sch.id/repository/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdf
    • http://lib-smansumsel.sch.id/repository/coin-master-60-spins_GM406889139.pdf
    • http://lib-smansumsel.sch.id/repository/minecraft-win-10-free_GM479516143.pdf
    • http://lib-smansumsel.sch.id/repository/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdf
    • http://lib-smansumsel.sch.id/repository/oprewards-com-roblox_GM431946152.pdf
    • http://lib-smansumsel.sch.id/repository/free-chest-coin-master_GM406889139.pdf
    • http://lib-smansumsel.sch.id/repository/was-minecraft-ever-free_GM479516143.pdf
    • http://lib-smansumsel.sch.id/repository/free-robux-thumbnail_GM431946152.pdf
    • http://lib-smansumsel.sch.id/repository/how-to-get-free-hats-on-roblox_GM431946152.pdf
    • http://lib-smansumsel.sch.id/repository/coin-master-free-spins-and-coins-daily-links_GM406889139.pdf
    • http://lib-smansumsel.sch.id/repository/free-robux-app_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000556f.bin
8b8b319ae1839b8268c4450b3c3094b44a5a008d5e60021cc62391333ce9d79a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x556F 24224 bytes
font_01_sfnt_off00008cb9.bin
e06aca5f85e50ae6cefda302c5299c18ab6d27c174f74f0bb0ee8efa7ccb4468		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CB9 8676 bytes
font_02_sfnt_off0000a143.bin
bab858729e8ad8a1f7527f4fc9e2aba9b42cc871b24e33d45117793d853149cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA143 18060 bytes

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