Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec334f3fb4934a63…

MALICIOUS

PDF

43.0 KB Created: 2021-05-14 18:21:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8a7440451d0a9193da61b427ab5556be SHA-1: 2abcb31fdbfc344fce87f40f562d03b73464f822 SHA-256: ec334f3fb4934a639d22e4d3385c1184abf46032b003441c450464a3f0a014bf
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, designed to trick users into interacting with a malicious link. The embedded URI points to a URL that appears to be a download link for a game hack, further supporting the malicious intent. The ML classifier also strongly flagged this PDF as malicious.

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/406889139/freespinandcoin-game-hack
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/coin-master-level-4_GM406889139.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/free-roblox-accounts-that-work_GM431946152.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/free-robux-codes-not-used_GM431946152.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/google-play-coin-master-free-spins_GM406889139.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/free-robux-quiz_GM431946152.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/is-minecraft-realms-free_GM479516143.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/coin-master-free-spins-link-download_GM406889139.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/free-coin-and-spin-in-coin-master_GM406889139.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/coin-master-free-spin-link-today-2021_GM406889139.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/roblox-assassin_GM431946152.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/how-to-hack-in-roblox-prison-life_GM431946152.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/free-hair-roblox_GM431946152.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/coin-master-game-for-pc-free-download_GM406889139.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/free-coins-on-coin-master_GM406889139.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/free-coins-coin-master-ios_GM406889139.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/coinmasterdailyfreespins-com_GM406889139.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/coinmasterhack-club_GM406889139.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/coin-master-free-spins-promo-code_GM406889139.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/free-robux-com-real_GM431946152.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/robloxheroxyz-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b89.bin
76999f32304ec10ba44a17194dbf4f91d7b88be3dd3f606ada2a2b164af0428c
pdf-font-stream PDF embedded font (sfnt) at offset 0x4B89 25884 bytes
font_01_sfnt_off000086de.bin
1c693cd3c749c7deb88a93ce437f6f23953c7e7e8560ccdde2498ee9463f8dc4
pdf-font-stream PDF embedded font (sfnt) at offset 0x86DE 17956 bytes