Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0debc4f748fdf87…

MALICIOUS

PDF

47.9 KB Created: 2021-06-11 09:47:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 925c9fa2d92aa39f3c1db508547bfacb SHA-1: 540e9be33f708ea92637fd4f7746d62761d92345 SHA-256: b0debc4f748fdf87c9027692f55f7dbcac6b9f2c5f007a71a92b88320c7cb105
82 Risk Score

Malware Insights

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

The document displays a fake CAPTCHA to lure 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. While no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to exploit vulnerabilities or trick the user into executing malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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/how-to-hack-treadmills-roblox-game-hack
    • http://internetdeputy.com/images/lazy-blocks-com-free-robux_GM431946152.pdf
    • http://internetdeputy.com/images/free-robux-com-2021_GM431946152.pdf
    • http://internetdeputy.com/images/coin-master-sound-daily-free-spins-link-today_GM406889139.pdf
    • http://internetdeputy.com/images/how-to-use-hacks-in-roblox-prison-life_GM431946152.pdf
    • http://internetdeputy.com/images/free-robux-no-verify-2021_GM431946152.pdf
    • http://internetdeputy.com/images/free-private-minecraft-server_GM479516143.pdf
    • http://internetdeputy.com/images/free-stuuf-in-roblox_GM431946152.pdf
    • http://internetdeputy.com/images/easy-how-to-get-free-robux_GM431946152.pdf
    • http://internetdeputy.com/images/cheat-engine-65-roblox_GM431946152.pdf
    • http://internetdeputy.com/images/free-premium-roblox_GM431946152.pdf
    • http://internetdeputy.com/images/coin-master-hack-without-verification_GM406889139.pdf
    • http://internetdeputy.com/images/roblox-fly-hack_GM431946152.pdf
    • http://internetdeputy.com/images/bloxpage-free-robux_GM431946152.pdf
    • http://internetdeputy.com/images/minecraft-hacks-xbox_GM479516143.pdf
    • http://internetdeputy.com/images/roblox-robux-hack_GM431946152.pdf
    • http://internetdeputy.com/images/good-free-minecraft-server-hosting_GM479516143.pdf
    • http://internetdeputy.com/images/is-it-possible-to-hack-a-roblox-account_GM431946152.pdf
    • http://internetdeputy.com/images/minecraft-free-apk-download-016-0_GM479516143.pdf
    • http://internetdeputy.com/images/tiktok-free-videos_GM835599320.pdf
    • http://internetdeputy.com/images/how-to-hack-roblox-murder-mystery-2-mod-menu_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000518a.bin
cde81945db1223b1a842487926ef3280f5c919ef7f4a8e55dcacfd436f718f24		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x518A 24432 bytes
font_01_sfnt_off000089bf.bin
40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89BF 3884 bytes
font_02_sfnt_off00009667.bin
1ef9c3f87701c3332fffe0e7269fdab6fe6d9720309a35ca6159f77e1641d68e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9667 18900 bytes

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