PDF malware analysis — malicious · 07d1c6e60f65ef3f

MALICIOUS

PDF

48.4 KB Created: 2021-06-10 17:59:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 595526d666d3830153c9e482f9ee69ef SHA-1: e67aea06670e99d9f3904ec4aa8462b8c8f354b3 SHA-256: 07d1c6e60f65ef3faa4a1e69dcc1455d952d4f5ea6493f6314f0c683b4099333

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The document presents a fake CAPTCHA to trick users into clicking a link, which is a common social engineering tactic. The embedded URL, https://netcdn.tw/app/431946152/www.hacker.com-free-robux-game-hack, likely leads to a malicious payload download. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest an attempt to exploit user interaction for malicious purposes.

Machine Learning

Nyx PDF Classifier malicious score 0.9796

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/www.hacker.com-free-robux-game-hack
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/free-robux-code-that-everyone-can-use_GM431946152.pdf
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/roblox-commands-hack-november-2021_GM431946152.pdf
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/how-to-have-robux-for-free-2021_GM431946152.pdf
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/hacks-for-roblox-high-school_GM431946152.pdf
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/how-to-glitch-free-clothes-on-roblox_GM431946152.pdf
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/roblox-hack-999999-robux-2021-android_GM431946152.pdf
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/how-to-get-free-robux-easy-and-fast-2021_GM431946152.pdf
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/robux-free-online_GM431946152.pdf
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/become-a-hacker-in-roblox_GM431946152.pdf
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/does-roblox-have-free-sneaks_GM431946152.pdf
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/hack-velocidad-roblox_GM431946152.pdf
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/script-for-hacking-roblox-phantom-forces_GM431946152.pdf
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/admin-command-cheat-roblox_GM431946152.pdf
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/roblox-free-girl-clothes_GM431946152.pdf
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/minecraft-free-app_GM479516143.pdf
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/free-robux-and-tix-generator-no-offers_GM431946152.pdf
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/free-tiktok-followers-app_GM835599320.pdf
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/how-to-hack-roblox-for-robux_GM431946152.pdf
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/roblox-knife-script-hack_GM431946152.pdf
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/free-minecraft-alt-generator_GM479516143.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off000053bf.bin` `049940c44243df89f8bc3ca83b48a7c765ee091a3fea520e94cf11cf7f1605ab`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x53BF	26548 bytes
`font_01_sfnt_off00008de9.bin` `3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8DE9	2840 bytes
`font_02_sfnt_off0000979b.bin` `76e578b445b41ec18269060c11667608b59c763a81deef6078bfe819fd2fd4e2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x979B	19268 bytes

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