Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bdd1be1067cc9b3…

MALICIOUS

PDF

51.7 KB Created: 2021-06-08 13:03:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9296f006ecd043f431ece8cbcc3d49a3 SHA-1: a1ab2193644b242487c37c3377fcd2484c05cdf3 SHA-256: 3bdd1be1067cc9b3c1ef410537eeb386a45168053e3e271ba74c2c9d842edb8e
102 Risk Score

Malware Insights

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

The document displays a fake CAPTCHA or human verification prompt to trick the user into interacting with it. It contains multiple embedded URLs, with the primary one pointing to a resource related to hacking Roblox. The presence of a fake CAPTCHA and a call-to-action lure suggests a phishing or social engineering attempt to lead the user to a malicious site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9464

Heuristics 5

  • 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
  • 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.tw/app/431946152/hack-roblox-bee-swarm-simulator-pc-game-hack
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/coin-master-free-2021-spin-link_GM406889139.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-2021_GM431946152.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/how-to-get-more-spins-on-coin-master-hack_GM406889139.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/coin-master-codes_GM406889139.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/adopt-me-roblox-hacks_GM431946152.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/coin-master-daily-bonus_GM406889139.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/robloxhacks_GM431946152.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/coin-master-free-spins-app_GM406889139.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-app_GM406889139.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/free-spins-coin-master-links-blogspot_GM406889139.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-no-survey_GM406889139.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/robux-gratis_GM431946152.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/claim-gg-free-robux_GM431946152.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/moon-static-coin-master-generator-hacks-free_GM406889139.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/is-tiktok-free-on-iphone_GM835599320.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/inappropriate-roblox_GM431946152.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/easy-robux-today-com_GM431946152.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/master-free-spin_GM406889139.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/roblox-fun-com-free-robux_GM431946152.pdf
    • https://www.communes.com
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005671.bin
85e958b80bf2129cc2785d94c2bf1c0b1c5dffc36932a30512c149898da26fee		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5671 28060 bytes
font_01_sfnt_off000097e5.bin
450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97E5 5696 bytes
font_02_sfnt_off0000a4f7.bin
096531fbcba9b2837e1f895f743bcc980eb7ee9c5f6e61dccde9f0feae3f1825		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA4F7 19124 bytes

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