Malicious PDF — malware analysis report

Static analysis result for SHA-256 72259ce12d3d35a3…

MALICIOUS

PDF

45.4 KB Created: 2021-06-03 06:41:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 847a0041b8603cf99c6260759038dad4 SHA-1: e4658e7a9dd34592d91aee7a8ec87e9658dbb8be SHA-256: 72259ce12d3d35a320a3c8126b89afcb8bcb81154d370627d68ce1ca0d0076fb
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

This PDF document employs a fake CAPTCHA lure to deceive users into downloading a malicious file. The document contains multiple embedded URLs, including one pointing to a potential payload at `https://netcdn.online/app/406889139/free-coin-master-glitches-game-hack`. The ML classifier strongly flagged this PDF as malicious, supporting the observed social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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/free-coin-master-glitches-game-hack
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/coin-mster-free_GM406889139.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id//repository/robux-miner_GM431946152.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/archery-master-3d-hack-unlimited-coins-cheats_GM406889139.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/coin-master-spin-cheat_GM406889139.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id//repository/earn-free-spins-in-coin-master_GM406889139.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/coin-master-daily-free-spins-link-download_GM406889139.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id//repository/claim-gg-free-robux_GM431946152.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/game-hack-coin-master_GM406889139.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id//repository/roblox-fun-com-free-robux_GM431946152.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id//repository/roblox-avatar-free_GM431946152.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/coin-master-free-spins-link-2021_GM406889139.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/roblox-hack-app_GM431946152.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id//repository/minecraft-pocket-edition-free-ios_GM479516143.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/free-robux-com-roblox_GM431946152.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id//repository/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/static-moonactive-net-rewards_GM406889139.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/coin-master-hacks-for-spins_GM406889139.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/how-to-hack-mcpe-master-coins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005188.bin
e4de184e68b5019df11ad64f301332aa0b789ae8d3d711659647d2228ef3290f		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5188 27032 bytes
font_01_sfnt_off00008ffe.bin
46024ec7988d8a29f9899108edac54a6ffad934125eaec0bee682c20bd570941		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FFE 17952 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.