Malicious PDF — malware analysis report

Static analysis result for SHA-256 610f06db4ad32f21…

MALICIOUS

PDF

45.6 KB Created: 2021-06-10 21:48:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: da6ec8113311c311427aef164460cf20 SHA-1: 424d809c52bae886f05179452c656a51e1883c2d SHA-256: 610f06db4ad32f2131980cdc71bf97f6b2d5560cdf78961ec882b9661f69f718
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The sample is a PDF document that displays a fake CAPTCHA or human verification prompt to trick the user into interacting with it. It contains an embedded URI pointing to a URL that likely hosts a malicious payload. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/roblox-redwood-county-free-game-hack
    • http://perpus.poltekkes-tanjungpinang.ac.id/repository/free-robux-no-verification-no-survey_GM431946152.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id/repository/como-hackear-coin-master_GM406889139.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id//repository/coin-master-links-free-spins_GM406889139.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id/repository/roblox-hack-dragon-ball-rage-stats_GM431946152.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id//repository/real-coin-master-hack-2021_GM406889139.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id/repository/how-to-create-a-minecraft-server-for-free_GM479516143.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id//repository/free-spins-on-coin-master-cheat_GM406889139.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id//repository/how-to-hack-coin-master-facebook_GM406889139.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id/repository/free-coin-master-coins_GM406889139.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id/repository/how-to-get-free-spins-on-coin-master-ios_GM406889139.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id//repository/how-pubg-uc-hack_GM1330123889.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id/repository/coin-master-apk-hack-mod-download_GM406889139.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id/repository/how-to-get-free-robux-easy-2021_GM431946152.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id//repository/how-to-hack-minecraft_GM479516143.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id/repository/free-robux-card-codes_GM431946152.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id//repository/bloxpage-free-robux_GM431946152.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id//repository/minecraft-hacks-18-9_GM479516143.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id/repository/minecraft-115-2-hacks_GM479516143.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id//repository/coin-master-hack-apk-download-2021_GM406889139.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id//repository/coin-master-hack-spins-ios_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005296.bin
9084d1bcceb8e7a7f15b3767324a5ba6076852e2a1eff2806606cf0001ee7f71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5296 25892 bytes
font_01_sfnt_off00008e6b.bin
8a1aef2a0c1ffd870cd61083b8f78a9e1bd62032bc270bfdd557dbfb6b0d9c2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E6B 18712 bytes

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