PDF malware analysis — malicious · 28848856d21ebdaf

MALICIOUS

PDF

47.1 KB Created: 2021-05-18 02:06:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16

MD5: 81beb7b2d1d07a7e920e88d08bd26100 SHA-1: 077816f2b2a0f95557e9222f768aae657aaefb3f SHA-256: 28848856d21ebdafa8c8b8b48574e2b1167205eedb69b645217a760411d5c362

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The document displays a fake CAPTCHA to lure the user into clicking a link, which is a common social engineering tactic. The embedded URL points to a resource likely designed to deliver a malicious payload. While no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to exploit vulnerabilities or trick the user into executing downloaded content.

Machine Learning

Nyx PDF Classifier malicious score 0.9977

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/where-to-get-robux-game-hack PDF link annotation
- https://www.tiancom.com.tw/upload/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/roblox-heroes-online_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/www-coin-master-hack-com_GM406889139.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/coinmasterfree_GM406889139.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/robux-hack-tools_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/how-to-get-roebucks_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/free-minecraft-account-list_GM479516143.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/free-robux-website_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/roblox-skins-boy-free_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/minecraft-bedrock-free-download-pc_GM479516143.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/free-robux-no-download_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/mistplay-robux_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004cc5.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4CC5	31040 bytes
SHA-256: `b31b106c77d9652cf22420709a7a21dd4f3a2544cdcbc414a5d020ed5cd09cc6`
`font_01_sfnt_off00009618.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9618	18316 bytes
SHA-256: `5d084a82250710db6b98a0dc3f702c66b679dd89c140e62c2649391066269139`

Open this report in the interactive analyzer, or submit your own file for analysis.