PDF malware analysis — malicious · 4c4357f3d8155673

MALICIOUS

PDF

45.4 KB Created: 2021-06-11 09:48:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: adac0cd50b5c8a6f2d3c0074bd21fba6 SHA-1: e56cb5febcce0dab1e2a2080cbcc32bfa7779d48 SHA-256: 4c4357f3d8155673c8f1d5e9b4430bc34c6672cc5f139f658f4ad92d5fbcd1ee

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document contains multiple embedded URLs pointing to sites offering game hacks and cheats, suggesting a lure for users seeking such content. The heuristic 'SE_CLIPBOARD_COMMAND_LURE' indicates the document may also instruct users to execute commands, likely to download or run further malicious payloads. The ML classifier strongly flags this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 0.9864

Heuristics 4

Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE

Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
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/hacking-a-roblox-fans-game-hack
- http://upes.edu.sv/ckfinder/userfiles/files/how-to-hack-coin-master-pc_GM406889139.pdf
- http://upes.edu.sv/ckfinder/userfiles/files/coin-master-2021-free-spins_GM406889139.pdf
- http://upes.edu.sv/ckfinder/userfiles/files/free-spins-coin-master-blogspot_GM406889139.pdf
- http://upes.edu.sv/ckfinder/userfiles/files/free-tiktok-bots_GM835599320.pdf
- http://upes.edu.sv/ckfinder/userfiles/files/free-robux-scams_GM431946152.pdf
- http://upes.edu.sv/ckfinder/userfiles/files/coin-master-hack-without-human-verification-2021_GM406889139.pdf
- http://upes.edu.sv/ckfinder/userfiles/files/coin-master-daily-free-coins-link-today_GM406889139.pdf
- http://upes.edu.sv/ckfinder/userfiles/files/coin-master-free-coins-link-march-2021_GM406889139.pdf
- http://upes.edu.sv/ckfinder/userfiles/files/20-free-spins-coin-master_GM406889139.pdf
- http://upes.edu.sv/ckfinder/userfiles/files/free-things-on-roblox_GM431946152.pdf
- http://upes.edu.sv/ckfinder/userfiles/files/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdf
- http://upes.edu.sv/ckfinder/userfiles/files/is-minecraft-free-on-mac_GM479516143.pdf
- http://upes.edu.sv/ckfinder/userfiles/files/sites-to-get-free-robux_GM431946152.pdf
- http://upes.edu.sv/ckfinder/userfiles/files/free-robux-without-verification_GM431946152.pdf
- http://upes.edu.sv/ckfinder/userfiles/files/coin-master-hack-2021_GM406889139.pdf
- http://upes.edu.sv/ckfinder/userfiles/files/how-to-make-a-roblox-group-for-free_GM431946152.pdf
- http://upes.edu.sv/ckfinder/userfiles/files/free-coin-app_GM406889139.pdf
- http://upes.edu.sv/ckfinder/userfiles/files/free-roblox-accounts-with-builders-club_GM431946152.pdf
- http://upes.edu.sv/ckfinder/userfiles/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdf
- http://upes.edu.sv/ckfinder/userfiles/files/is-free-robux-real_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_off000051cd.bin` `de54bb0b91fd07d093de4e87dd553217c69beb7e945f4e953e3ce40463580bb8`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x51CD	25952 bytes
`font_01_sfnt_off00008d6b.bin` `b2085a36c5fd2cc3f58fe5210e91fac5091c5587c859781a414b50062c95a9e5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D6B	18752 bytes

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