PDF malware analysis — malicious · 511580b9fa9bcbf6

MALICIOUS

PDF

45.4 KB Created: 2021-06-10 16:46:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 5539392e63d7a65d8cde6b5bdf84e36d SHA-1: 2ecf7a1d076c6dc531aeac8f2dc87caa4146e078 SHA-256: 511580b9fa9bcbf6b38bac41b426ad4b5d1760b8a9419ef3c8fbe120e667fcf8

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a fake CAPTCHA lure, directing users to click on a URL that likely leads to a malicious download. The ML classifier also flagged this PDF as malicious with high confidence. The presence of multiple suspicious URLs suggests a phishing or scam attempt.

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/free-roblox-cosmetic-codes-game-hack
- http://juscor.com.br/ckfinder/userfiles/files/google-coin-master-free-spins_GM406889139.pdf
- http://juscor.com.br/ckfinder/userfiles/files/minecraft-free-download-mac-full-version-2021_GM479516143.pdf
- http://juscor.com.br/ckfinder/userfiles/files/roblox-robux_GM431946152.pdf
- http://juscor.com.br/ckfinder/userfiles/files/games-that-can-be-hacked_GM431946152.pdf
- http://juscor.com.br/ckfinder/userfiles/files/free-robux-games-that-actually-work-2021_GM431946152.pdf
- http://juscor.com.br/ckfinder/userfiles/files/daily-coin-master-free-spins_GM406889139.pdf
- http://juscor.com.br/ckfinder/userfiles/files/minecraft-java-for-free_GM479516143.pdf
- http://juscor.com.br/ckfinder/userfiles/files/how-to-get-20210-robux-for-free_GM431946152.pdf
- http://juscor.com.br/ckfinder/userfiles/files/free-robux-without-verification-or-survey_GM431946152.pdf
- http://juscor.com.br/ckfinder/userfiles/files/is-minecraft-free-on-xbox-one_GM479516143.pdf
- http://juscor.com.br/ckfinder/userfiles/files/coin-master-lucky-patcher-hack_GM406889139.pdf
- http://juscor.com.br/ckfinder/userfiles/files/free-robux-no-human-verify_GM431946152.pdf
- http://juscor.com.br/ckfinder/userfiles/files/minecraft-for-ps3-free_GM479516143.pdf
- http://juscor.com.br/ckfinder/userfiles/files/toolbox-premium-apk_GM479516143.pdf
- http://juscor.com.br/ckfinder/userfiles/files/coin-master-free-spins-link-today-hack_GM406889139.pdf
- http://juscor.com.br/ckfinder/userfiles/files/free-coins-coin-master-hack_GM406889139.pdf
- http://juscor.com.br/ckfinder/userfiles/files/coin-master-free-spins-moonactive_GM406889139.pdf
- http://juscor.com.br/ckfinder/userfiles/files/coin-master-game-hack-app_GM406889139.pdf
- http://juscor.com.br/ckfinder/userfiles/files/free-robux-2021-no-verification_GM431946152.pdf
- http://juscor.com.br/ckfinder/userfiles/files/strucid-roblox-hacks_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00005060.bin` `9f2ad31562e37febef9d13bd4941de1f6d1c5f755c32770b008fd5c0c78b461c`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5060	26520 bytes
`font_01_sfnt_off00008e2a.bin` `ba3aa1c187ea43eeffd3a1e827040e451aee9d5f8607f0c06e03147dfb6b38a8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8E2A	18604 bytes

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