Malicious PDF — malware analysis report

Static analysis result for SHA-256 30f9e0a667f25007…

MALICIOUS

PDF

45.3 KB Created: 2021-05-16 01:47:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 1a7d9b136da5be27850e7164221f4278 SHA-1: c626d4a3524c4e7319cdbf3ef2c7259f127cd36a SHA-256: 30f9e0a667f25007121629f033583affd17fa372df0a1f841ceef14e9bf4795e
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA or human verification prompt, a common lure for users to download malicious files. It contains multiple embedded URLs pointing to potentially malicious content, including one directly related to a game hack. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/479516143/wurst-minecraft-game-hack PDF link annotation
    • http://nebraskahospitalityhalloffame.com/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/roblox-games-free_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-free-spin-link-twitter_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-bonus_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/does-roblox-premium-expire_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/how-to-get-free-spins-on-coin-master-android_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/toolbox-for-minecraft_GM479516143.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/wurst-112-2_GM479516143.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-jackpot-madness-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004bc4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BC4 25316 bytes
SHA-256: 7ecfad19bc8a2521d840286781b83c6be1bb10513740f782edf3e8199a1ff5c0
font_01_sfnt_off0000857b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x857B 3056 bytes
SHA-256: dd24a0ab94df4552e459bd06fd01b0fd3f021c1d51d1d64407070e735974a028
font_02_sfnt_off00008fed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FED 17904 bytes
SHA-256: fe2be4bfd964b3268c312eb0b249b51bf809c15fdb0694b3c785ca9563b07e04

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