PDF malware analysis — malicious · 95792e790ba9e1e7

MALICIOUS

PDF

46.5 KB Created: 2021-05-12 14:03:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 5dd25cbc3edc24eff4f4b6710d8fedcc SHA-1: 6386ac3789998ac7e9f3134b60ea20683f0bad0b SHA-256: 95792e790ba9e1e7a29a059a670fb18b8a7b37eab0eafab73098cd245a8232c9

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF document contains a fake CAPTCHA lure, aiming to trick users into downloading a malicious file. It also embeds multiple URLs, one of which, 'https://netcdn.xyz/app/431946152/rbxdemon-game-hack', is directly associated with the malicious classification. The document's structure and embedded links suggest it is part of a phishing campaign designed to distribute malware.

Machine Learning

Nyx PDF Classifier malicious score 0.8948

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.xyz/app/431946152/rbxdemon-game-hack
- https://kalautsav.bepcssa.in/ckfinder/userfiles/files/roblox-jailbreak-hack-download_GM431946152.pdf
- https://kalautsav.bepcssa.in/ckfinder/userfiles/files/roebucks-on-roblox_GM431946152.pdf
- https://kalautsav.bepcssa.in/ckfinder/userfiles/files/free-to-play-minecraft-servers_GM479516143.pdf
- https://kalautsav.bepcssa.in/ckfinder/userfiles/files/coin-master-free-spin-group_GM406889139.pdf
- https://kalautsav.bepcssa.in/ckfinder/userfiles/files/coin-master-70-spin-link-2021_GM406889139.pdf
- https://kalautsav.bepcssa.in/ckfinder/userfiles/files/free-roblox-codes-2021_GM431946152.pdf
- https://kalautsav.bepcssa.in/ckfinder/userfiles/files/free-links-coin-master_GM406889139.pdf
- https://kalautsav.bepcssa.in/ckfinder/userfiles/files/free-robux-games-that-actually-work-2021_GM431946152.pdf
- https://kalautsav.bepcssa.in/ckfinder/userfiles/files/app-store-coin-master-free-spins_GM406889139.pdf
- https://kalautsav.bepcssa.in/ckfinder/userfiles/files/roblox36com-free-robux_GM431946152.pdf
- https://kalautsav.bepcssa.in/ckfinder/userfiles/files/free-minecraft-capes-no-mods_GM479516143.pdf
- https://kalautsav.bepcssa.in/ckfinder/userfiles/files/original-roblox_GM431946152.pdf
- https://kalautsav.bepcssa.in/ckfinder/userfiles/files/hack-coin-master-game-download_GM406889139.pdf
- https://kalautsav.bepcssa.in/ckfinder/userfiles/files/optifine-mcpe_GM479516143.pdf
- https://kalautsav.bepcssa.in/ckfinder/userfiles/files/minecraft-pe-hacked-client-download_GM479516143.pdf
- https://kalautsav.bepcssa.in/ckfinder/userfiles/files/2021-free-spins-coin-master-link_GM406889139.pdf
- https://kalautsav.bepcssa.in/ckfinder/userfiles/files/coin-master-hack-apk-online_GM406889139.pdf
- https://kalautsav.bepcssa.in/ckfinder/userfiles/files/coin-master-daily-spins_GM406889139.pdf
- https://kalautsav.bepcssa.in/ckfinder/userfiles/files/coin-master-free-coins-and-spins-daily-summary_GM406889139.pdf
- https://kalautsav.bepcssa.in/ckfinder/userfiles/files/how-to-get-robux-without-human-verification_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004b54.bin` `342656b799c77f18be3e35b6da71822e497399adcbe13ebc4f147204c6d0a7f6`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4B54	26400 bytes
`font_01_sfnt_off00008988.bin` `889cfc2fd0afa9ea114d6666204c6ce0548d0aae2cba345827d317498c4c06bc`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8988	2984 bytes
`font_02_sfnt_off000093b4.bin` `84e994ea3e0766e4b6b44f1efc08852f1b1b6721f581ba32b946cb803bfb180d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x93B4	18144 bytes

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