PDF malware analysis — malicious · ee5c82ef45b5b744

MALICIOUS

PDF

44.3 KB Created: 2021-06-03 10:58:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 6f347a0a246629a6118bf4ea83ef888a SHA-1: 1ff9c469e874f26f904334ff87adc64d554b2d2b SHA-256: ee5c82ef45b5b7447abe94b5d0faf71aca43b8931ea9ff61d139eb40f160ce75

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document presents a fake CAPTCHA or human verification prompt, a common social engineering tactic to trick users into interacting with malicious content. It contains numerous embedded URLs, one of which is directly linked to a potential payload download. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/coin-master-links-for-free-spins-2021-game-hack
- https://ifef.es/ckfinder/userfiles/files/free-spins-for-coin-master-that-work_GM406889139.pdf
- https://ifef.es/ckfinder/userfiles/files/grabpoints-robux_GM431946152.pdf
- https://ifef.es/ckfinder/userfiles/files/coin-master-heaven-free-spins-link-2021_GM406889139.pdf
- https://ifef.es/ckfinder/userfiles/files/roblox-install-free_GM431946152.pdf
- https://ifef.es/ckfinder/userfiles/files/coin-master-free-spins-2021-hack_GM406889139.pdf
- https://ifef.es/ckfinder/userfiles/files/coin-master-hack-extension_GM406889139.pdf
- https://ifef.es/ckfinder/userfiles/files/link-for-free-spins-on-coin-master_GM406889139.pdf
- https://ifef.es/ckfinder/userfiles/files/coin-master-hack-link_GM406889139.pdf
- https://ifef.es/ckfinder/userfiles/files/free-spins-and-coins-for-coin-master_GM406889139.pdf
- https://ifef.es/ckfinder/userfiles/files/how-to-get-free-robux-without-verification_GM431946152.pdf
- https://ifef.es/ckfinder/userfiles/files/coin-master-hack-cheat-engine_GM406889139.pdf
- https://ifef.es/ckfinder/userfiles/files/coin-master-daily-free-spins-and-coins-link_GM406889139.pdf
- https://ifef.es/ckfinder/userfiles/files/can-u-get-free-robux_GM431946152.pdf
- https://ifef.es/ckfinder/userfiles/files/roblox-fun-com-free-robux_GM431946152.pdf
- https://ifef.es/ckfinder/userfiles/files/coin-master-hacks_GM406889139.pdf
- https://ifef.es/ckfinder/userfiles/files/free-coins-and-spins-for-coin-master-game_GM406889139.pdf
- https://ifef.es/ckfinder/userfiles/files/roblox-free-play_GM431946152.pdf
- https://ifef.es/ckfinder/userfiles/files/coin-master-free-spins-a2z-help_GM406889139.pdf
- https://ifef.es/ckfinder/userfiles/files/minecraft-free-no-download_GM479516143.pdf
- https://ifef.es/ckfinder/userfiles/files/coin-master-gold-cards-free_GM406889139.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_off00005215.bin` `31e0a9a77c97fd8e0cb3cbb4730e60a82e25ef25e19f67f70df67adb5fbb8864`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5215	24640 bytes
`font_01_sfnt_off000089c9.bin` `a92e7a86c8f96ab5d5d3ed0cab2d9be7dec7c1a4821e4e0502d142dbf0f5217f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x89C9	18456 bytes

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