PDF malware analysis — malicious · eac8dac6b70fa66b

MALICIOUS

PDF

44.0 KB Created: 2021-06-03 07:27:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 97bccfccf6d78e30c7ca7a7dade86056 SHA-1: ee99a5e1a490e727ec5a214b9967cd79b986186a SHA-256: eac8dac6b70fa66bd52cdae6a8f5a0405f71a5328274a07883268f5f57186152

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample is a PDF that displays a fake CAPTCHA or human verification prompt, a common lure to trick users into clicking malicious links. The embedded URL, https://netcdn.online/app/431946152/free-robux-hack-no-human-verification-game-hack, likely leads to the download of a second-stage payload. 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/431946152/free-robux-hack-no-human-verification-game-hack
- https://opac.heritagejkt.org//repository/spin-coin-master-free_GM406889139.pdf
- https://opac.heritagejkt.org/repository/free-robux-without-downloading-anything_GM431946152.pdf
- https://opac.heritagejkt.org/repository/hacks-and-cheats-for-coin-master_GM406889139.pdf
- https://opac.heritagejkt.org//repository/minecraft-toys-for-free_GM479516143.pdf
- https://opac.heritagejkt.org/repository/2021-coin-master-hack-without-verification_GM406889139.pdf
- https://opac.heritagejkt.org//repository/how-to-hack-roblox-on-mobile_GM431946152.pdf
- https://opac.heritagejkt.org/repository/coin-master-free-spins-save_GM406889139.pdf
- https://opac.heritagejkt.org//repository/free-rare-cards-for-coin-master_GM406889139.pdf
- https://opac.heritagejkt.org//repository/50-free-spins-coin-master_GM406889139.pdf
- https://opac.heritagejkt.org/repository/coin-master-hack-that-actually-works_GM406889139.pdf
- https://opac.heritagejkt.org//repository/how-to-get-free-robux-no-verification_GM431946152.pdf
- https://opac.heritagejkt.org/repository/free-spin-links-coin-master-2021_GM406889139.pdf
- https://opac.heritagejkt.org//repository/how-to-download-minecraft-for-free-on-windows-10_GM479516143.pdf
- https://opac.heritagejkt.org//repository/roblox-com-free-robux_GM431946152.pdf
- https://opac.heritagejkt.org/repository/free-spins-coin-master-links-twitter_GM406889139.pdf
- https://opac.heritagejkt.org//repository/master-coin-free-spin-daily_GM406889139.pdf
- https://opac.heritagejkt.org/repository/free-tiktok-fans-and-likes_GM835599320.pdf
- https://opac.heritagejkt.org//repository/get-free-robux-today_GM431946152.pdf
- https://opac.heritagejkt.org//repository/free-spins-coin-master-2021-hack_GM406889139.pdf
- https://opac.heritagejkt.org/repository/easy-robux-generator_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00004f15.bin` `38bb0cff825c2154eb395c90221fedac52ee7ef2c871d3af27ec48328212b54d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4F15	24724 bytes
`font_01_sfnt_off00008746.bin` `768a4e91d7c3975acc2b79a699acb909e0f8bbf2befa87684aa1b4f9aecc197e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8746	19028 bytes

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