PDF malware analysis — malicious · 3ee9549384dfc9b6

MALICIOUS

PDF

43.7 KB Created: 2021-06-06 23:32:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: b193fbdbe60a21611a44fdcd0c6e3eb2 SHA-1: 534704a7be1792df2a0b247f00ec571ccf008be1 SHA-256: 3ee9549384dfc9b6ff2481c651bdfd372067f4a26ec69293bb728ae928de055f

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document presents a fake CAPTCHA and a call-to-action to trick users into clicking a link, which is a common social engineering tactic. The embedded URL, https://netcdn.tw/app/431946152/free-roblox-accounts-2021-october-game-hack, likely leads to a site offering game-related cheats or account generation. 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.tw/app/431946152/free-roblox-accounts-2021-october-game-hack
- http://library.ft.upnvj.ac.id/repository/coin-spin_GM406889139.pdf
- http://library.ft.upnvj.ac.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdf
- http://library.ft.upnvj.ac.id/repository/can-i-get-minecraft-windows-10-for-free_GM479516143.pdf
- http://library.ft.upnvj.ac.id/repository/coin-master-hack-app-download-free_GM406889139.pdf
- http://library.ft.upnvj.ac.id/repository/pokemon-go-free-to-play-guide_GM1094591345.pdf
- http://library.ft.upnvj.ac.id/repository/how-to-change-roblox-name-for-free_GM431946152.pdf
- http://library.ft.upnvj.ac.id/repository/free-robux-just-click_GM431946152.pdf
- http://library.ft.upnvj.ac.id/repository/free-2021-robux_GM431946152.pdf
- http://library.ft.upnvj.ac.id/repository/how-to-get-minecraft-for-free-on-ps4-2021_GM479516143.pdf
- http://library.ft.upnvj.ac.id/repository/coin-master-hacks-free-spins_GM406889139.pdf
- http://library.ft.upnvj.ac.id/repository/coin-master-free-spin-and-coin-links_GM406889139.pdf
- http://library.ft.upnvj.ac.id/repository/how-to-get-100-robux-for-free_GM431946152.pdf
- http://library.ft.upnvj.ac.id/repository/free-robux-mod_GM431946152.pdf
- http://library.ft.upnvj.ac.id/repository/how-to-get-free-coins-in-minecraft_GM479516143.pdf
- http://library.ft.upnvj.ac.id/repository/daily-free-spin-link-in-coin-master_GM406889139.pdf
- http://library.ft.upnvj.ac.id/repository/free-robux-app-2021_GM431946152.pdf
- http://library.ft.upnvj.ac.id/repository/roblox-hack-codes_GM431946152.pdf
- http://library.ft.upnvj.ac.id/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdf
- http://library.ft.upnvj.ac.id/repository/minecraft-free-exe_GM479516143.pdf
- http://library.ft.upnvj.ac.id/repository/coin-master-2021_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_off00004eec.bin` `a9ab945a02b857ad410d8a558bf6cf04dc7fe11bfe381bf07dea6d9390ea078c`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4EEC	24496 bytes
`font_01_sfnt_off0000873d.bin` `70a11ebd9b0b960e1b0ea3acb9abe39ce4483e6a41e52eb8fe8e629f19a68c32`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x873D	18596 bytes

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