Malicious PDF — malware analysis report

Static analysis result for SHA-256 64d01bef176e991b…

MALICIOUS

PDF

42.7 KB Created: 2021-05-12 10:39:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8a36fb39a8d53d54cdc302d5f548399b SHA-1: 83cce79f46322c31c5d3d740d2c5710a65f580d6 SHA-256: 64d01bef176e991b9e72496f53be8a7434c8a398fb786f8952048e4e6443a379
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a fake CAPTCHA lure, designed to trick users into interacting with a link. The embedded URL, https://netcdn.xyz/app/431946152/how-to-get-roblox-credit-for-free-game-hack, likely leads to a malicious download or further phishing content. The document's content and heuristics strongly suggest a social engineering attempt to compromise the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/how-to-get-roblox-credit-for-free-game-hack
    • http://elearning.maassalamiyah.sch.id/__statics/gudangsoal/files/cheats-coin-master-free_GM406889139.pdf
    • http://elearning.maassalamiyah.sch.id/__statics/gudangsoal/files/coin-master-free-blogspot_GM406889139.pdf
    • http://elearning.maassalamiyah.sch.id/__statics/gudangsoal/files/free-roblox-hair-to-wear_GM431946152.pdf
    • http://elearning.maassalamiyah.sch.id/__statics/gudangsoal/files/op-rewards-free-robux_GM431946152.pdf
    • http://elearning.maassalamiyah.sch.id/__statics/gudangsoal/files/how-to-get-free-roblox_GM431946152.pdf
    • http://elearning.maassalamiyah.sch.id/__statics/gudangsoal/files/free-robux-survey_GM431946152.pdf
    • http://elearning.maassalamiyah.sch.id/__statics/gudangsoal/files/free-robux-card-codes_GM431946152.pdf
    • http://elearning.maassalamiyah.sch.id/__statics/gudangsoal/files/weird-roblox_GM431946152.pdf
    • http://elearning.maassalamiyah.sch.id/__statics/gudangsoal/files/roblox-login-hack_GM431946152.pdf
    • http://elearning.maassalamiyah.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-cheat_GM406889139.pdf
    • http://elearning.maassalamiyah.sch.id/__statics/gudangsoal/files/free-robux-working_GM431946152.pdf
    • http://elearning.maassalamiyah.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-2021_GM406889139.pdf
    • http://elearning.maassalamiyah.sch.id/__statics/gudangsoal/files/coin-master-free-spin-redeem-code_GM406889139.pdf
    • http://elearning.maassalamiyah.sch.id/__statics/gudangsoal/files/minecraft-hacks-xbox-one_GM479516143.pdf
    • http://elearning.maassalamiyah.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification_GM431946152.pdf
    • http://elearning.maassalamiyah.sch.id/__statics/gudangsoal/files/get-free-robux-now_GM431946152.pdf
    • http://elearning.maassalamiyah.sch.id/__statics/gudangsoal/files/roblox-bux-free_GM431946152.pdf
    • http://elearning.maassalamiyah.sch.id/__statics/gudangsoal/files/free-roblox-generator_GM431946152.pdf
    • http://elearning.maassalamiyah.sch.id/__statics/gudangsoal/files/free-coin-master-spins-and-coins_GM406889139.pdf
    • http://elearning.maassalamiyah.sch.id/__statics/gudangsoal/files/haktuts-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_off00004c8e.bin
f9418a11ca51f5f1afa95e5584eb28e4916cdef974d81fb3a0fdbc0c88fe7736		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C8E 24388 bytes
font_01_sfnt_off000083e0.bin
aaee93be15afea3f34265028f72e14c8d8177a28a7e511fa9958eeec3e94f784		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83E0 18508 bytes

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