PDF malware analysis — malicious · dc43b7eaf5323afa

MALICIOUS

PDF

44.5 KB Created: 2021-05-11 23:37:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: eafc13470bb142e873ed840939796547 SHA-1: f9da19bf85722e48d14556986c0f7dce249ceef0 SHA-256: dc43b7eaf5323afa900a269eafb9d01635863a3c82d8935762865083782a6f0f

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a fake CAPTCHA lure, designed to trick users into interacting with malicious links. The embedded URLs point to various scam-related content, such as 'free coins' or 'hacks', suggesting a phishing or scamming operation. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

Nyx PDF Classifier malicious score 0.9632

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/406889139/coin-master-free-coins-link-march-2021-game-hack
- https://cormixhydro.ru/images/free-robux-generator-for-roblox-2021_GM431946152.pdf
- https://cormixhydro.ru/images/free-robux-no-survey-or-human-verification_GM431946152.pdf
- https://cormixhydro.ru/images/free-accessories-roblox_GM431946152.pdf
- https://cormixhydro.ru/images/mcpe-hacks_GM479516143.pdf
- https://cormixhydro.ru/images/coin-master-free-spins-no-human-verification_GM406889139.pdf
- https://cormixhydro.ru/images/100-hack-coin-master_GM406889139.pdf
- https://cormixhydro.ru/images/robux-hack-me_GM431946152.pdf
- https://cormixhydro.ru/images/robux-free-promo-codes_GM431946152.pdf
- https://cormixhydro.ru/images/coin-master-ad_GM406889139.pdf
- https://cormixhydro.ru/images/free-robux-websites-no-human-verification_GM431946152.pdf
- https://cormixhydro.ru/images/minecraft-java-edition-key-free_GM479516143.pdf
- https://cormixhydro.ru/images/can-i-play-roblox-for-free_GM431946152.pdf
- https://cormixhydro.ru/images/hack-coin-master-2021_GM406889139.pdf
- https://cormixhydro.ru/images/i-want-robux_GM431946152.pdf
- https://cormixhydro.ru/images/get-free-robux-no-human-verification_GM431946152.pdf
- https://cormixhydro.ru/images/codes-how-to-get-free-robux_GM431946152.pdf
- https://cormixhydro.ru/images/minecraft-java-edition-free-download_GM479516143.pdf
- https://cormixhydro.ru/images/coin-master-daily-free-spins-blogspot_GM406889139.pdf
- https://cormixhydro.ru/images/blogspot-coin-master_GM406889139.pdf
- https://cormixhydro.ru/images/get-free-gold-cards-in-coin-master_GM406889139.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00004911.bin` `2112daaab5070794fef9f16881aa112769dcdcc92cec184a3f0872d133862652`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4911	24900 bytes
`font_01_sfnt_off000080fe.bin` `10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x80FE	2880 bytes
`font_02_sfnt_off00008ae9.bin` `53fc9b00e8334927a06c417505ef1231a561c67dc2332cbf65c5abe9a93c6d77`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8AE9	18448 bytes

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