PDF malware analysis — malicious · 322404505c552e7d

MALICIOUS

PDF

42.2 KB Created: 2021-05-18 03:00:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: b48a56f125162cd15f190af563006b24 SHA-1: 2ce3b841a2074d3fa80358d4d040c8fdda79521e SHA-256: 322404505c552e7d1f1047205d0d784ad759594bb90fe8f7a083b396f0c1d541

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a fake CAPTCHA lure to trick users into clicking a link, which is a common social engineering tactic. The embedded URI points to a URL that likely hosts a second-stage payload. While no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to facilitate a download, aligning with spearphishing attachment techniques.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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/free-exploits-for-roblox-game-hack
- http://www.imperialaccountingfl.com/images/app-for-free-spins-on-coin-master_GM406889139.pdf
- http://www.imperialaccountingfl.com/images/coin-master-fan-page-free-spins_GM406889139.pdf
- http://www.imperialaccountingfl.com/images/hack-my-spins-coin-master_GM406889139.pdf
- http://www.imperialaccountingfl.com/images/haktuts-coin-master-free-spin-link-today_GM406889139.pdf
- http://www.imperialaccountingfl.com/images/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdf
- http://www.imperialaccountingfl.com/images/robux-free-2021_GM431946152.pdf
- http://www.imperialaccountingfl.com/images/earn-robux-online_GM431946152.pdf
- http://www.imperialaccountingfl.com/images/is-roblox-hacked_GM431946152.pdf
- http://www.imperialaccountingfl.com/images/coin-master-free-cards-link_GM406889139.pdf
- http://www.imperialaccountingfl.com/images/mcpe-master-coins-hack_GM406889139.pdf
- http://www.imperialaccountingfl.com/images/coin-master-400-spin-link-today_GM406889139.pdf
- http://www.imperialaccountingfl.com/images/hacks-to-get-free-robux_GM431946152.pdf
- http://www.imperialaccountingfl.com/images/coin-master-official-page_GM406889139.pdf
- http://www.imperialaccountingfl.com/images/how-to-change-your-username-in-roblox-for-free_GM431946152.pdf
- http://www.imperialaccountingfl.com/images/best-minecraft-hacks_GM479516143.pdf
- http://www.imperialaccountingfl.com/images/facebook-coin-master-free-spins-link_GM406889139.pdf
- http://www.imperialaccountingfl.com/images/coin-master-pc-hack_GM406889139.pdf
- http://www.imperialaccountingfl.com/images/mcpe-master-hack-unlimited-coins-download_GM406889139.pdf
- http://www.imperialaccountingfl.com/images/how-to-get-spins-on-coin-master-hack_GM406889139.pdf
- http://www.imperialaccountingfl.com/images/roblox-gang-rape_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_003_off00004940.bin` `f9892b0f270bf01b8a552e14687cc1a2c52206f894346d19432e9b5a394945a1`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4940	24912 bytes
`font_01_sfnt_off00008284.bin` `3eb1125b3232d06dc8927376afe50af41f8c0a9e23720a9da0c3984e77695e12`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8284	18348 bytes

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