Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fc01d65c5fea5cd…

MALICIOUS

PDF

45.8 KB Created: 2021-06-11 09:17:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: b47631a8b21bb88478437f947cbf41e4 SHA-1: a04847d972c7c8c7355c5fc3856e87126a41044c SHA-256: 9fc01d65c5fea5cd1594a00a81194b45afaee831d517f0993254b8594821b39d
82 Risk Score

Malware Insights

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

The document displays a fake CAPTCHA to trick the user into clicking a link, which is a common social engineering tactic. The embedded URL points to a resource that likely serves as a download for a second-stage payload. No scripts were extracted, but the presence of a fake CAPTCHA and external URLs strongly suggests a malicious intent to deliver malware.

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/unlimited-robux-hack-2021-game-hack
    • http://pustaka.bbppketindan.info/repository/daily-coin-master-free-spin-apk_GM406889139.pdf
    • http://pustaka.bbppketindan.info/repository/roblox-gift-card-online-free_GM431946152.pdf
    • http://pustaka.bbppketindan.info/repository/coin-master-free-spins-link-2021_GM406889139.pdf
    • http://pustaka.bbppketindan.info/repository/get-robux-for-free-2021_GM431946152.pdf
    • http://pustaka.bbppketindan.info//repository/robux-for-surveys_GM431946152.pdf
    • http://pustaka.bbppketindan.info/repository/mathep_GM431946152.pdf
    • http://pustaka.bbppketindan.info//repository/appsmob-coin-master-hack_GM406889139.pdf
    • http://pustaka.bbppketindan.info/repository/roblox-jailbreak-2021-btools-hack_GM431946152.pdf
    • http://pustaka.bbppketindan.info//repository/100-free-spins-coin-master_GM406889139.pdf
    • http://pustaka.bbppketindan.info//repository/roblox-jailbreak-hack_GM431946152.pdf
    • http://pustaka.bbppketindan.info//repository/op-rewards-free-robux_GM431946152.pdf
    • http://pustaka.bbppketindan.info//repository/how-to-get-stuff-that-cost-coins-free-mcpe-master_GM406889139.pdf
    • http://pustaka.bbppketindan.info//repository/coin-master-unlimited-spin-hack-mod-apk_GM406889139.pdf
    • http://pustaka.bbppketindan.info/repository/coin-master-hack-tool-apk-download_GM406889139.pdf
    • http://pustaka.bbppketindan.info/repository/400-robux-free-2021_GM431946152.pdf
    • http://pustaka.bbppketindan.info/repository/coin-master-free-gifts_GM406889139.pdf
    • http://pustaka.bbppketindan.info/repository/minecraft-xray-hack_GM479516143.pdf
    • http://pustaka.bbppketindan.info/repository/free-robux-just-enter-username-and-password_GM431946152.pdf
    • http://pustaka.bbppketindan.info//repository/free-coins-and-spins-for-coin-master-game_GM406889139.pdf
    • http://pustaka.bbppketindan.info//repository/game-give-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051b2.bin
d06d684c4e907f8de6f9a90b700b43078ee334c0a92690192b7e8b7ab98ac7ef		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51B2 25488 bytes
font_01_sfnt_off00008cc3.bin
e01aaafeaeecb8749aeb80b7b0b248ac98b3d5b7fa1d6af2324588e2dc2f691d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CC3 19568 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.