Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec7d6e8f1bc14b62…

MALICIOUS

PDF

49.8 KB Created: 2021-05-13 02:02:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 1c3200dadfe17bf626914a30aa244375 SHA-1: ba71ca8088cfe5ffcdcc19f548da09de1a956b0f SHA-256: ec7d6e8f1bc14b62fc0307c1dc351f0a9d0f9d3d5a19663103f525816a601f99
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The document displays a fake CAPTCHA to lure users into clicking a malicious link, likely to download a second-stage payload. The embedded URL 'https://netcdn.xyz/app/431946152/free-robux-com-real-game-hack' is a strong indicator of this malicious intent. While no scripts were explicitly extracted, the PDF structure and heuristics suggest an attempt to exploit user interaction for execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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.xyz/app/431946152/free-robux-com-real-game-hack
    • http://perpustakaan.sman2bondowoso.sch.id/repository/haktuts-free-spins_GM406889139.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/minecraft-on-computer-free_GM479516143.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/coin-master-2021-free-spins-link_GM406889139.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/spin-coin-master-free_GM406889139.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/free-robux-live_GM431946152.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/coin-master-hacks-that-actually-work_GM406889139.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/apps-to-hack-coin-master_GM406889139.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/free-rare-cards-for-coin-master-christmas_GM406889139.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/mcpe-hack-client_GM479516143.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/get-free-robux-now_GM431946152.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/hack-my-spins-coin-master_GM406889139.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/roblox-hacked-version-download_GM431946152.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/androeed-ru-minecraft_GM479516143.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/blox-land-free-robux_GM431946152.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/free-robux-codes-2021_GM431946152.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/try-minecraft-free_GM479516143.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/free-account-roblox-with-robux_GM431946152.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/how-to-make-a-minecraft-client_GM479516143.pdf
    • http://perpustakaan.sman2bondowoso.sch.id/repository/free-spin-link-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004886.bin
662d78931190a4922ef934c87fbeca36bf1f75e079c6a11ac9514d6b9dee9945		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4886 39752 bytes
font_01_sfnt_off0000a031.bin
a83edd52c2be056a67ce389c2e3103e44ea5f6bc4cdf4c28a35d8553f09f80ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA031 18576 bytes

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