PDF malware analysis — malicious · 6e097b932593364b

MALICIOUS

PDF

34.0 KB Created: 2021-06-19 08:44:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15

MD5: d82983ac7c53a0dcb3634dd92a7e9798 SHA-1: 64db3ec99d540e02420975bebb83125490c7af8e SHA-256: 6e097b932593364bb1762136480e69599323653eaf6b3c45bcef9eee1aa8f21e

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The document presents itself as a guide for obtaining free items in games like Roblox, but it contains heuristics indicating a browser extension installation lure and external URIs. The primary URL, http://netcdn.co/app/431946152/how-to-redeem-free-codes-on-roblox-game-hack, likely leads to a malicious download or phishing page. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE

Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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 http://netcdn.co/app/431946152/how-to-redeem-free-codes-on-roblox-game-hack PDF link annotation
- https://nature-air.com.tw/upload/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
- https://nature-air.com.tw/upload/files/minecraft-login-free_GM479516143.pdfIn PDF document text
- https://nature-air.com.tw/upload/files/free-robux-website_GM431946152.pdfIn PDF document text
- https://nature-air.com.tw/upload/files/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
- https://nature-air.com.tw/upload/files/free-minecraft-bedrock-server-hosting_GM479516143.pdfIn PDF document text
- https://nature-air.com.tw/upload/files/free-roblox-girl-hair-not-a-model_GM431946152.pdfIn PDF document text
- https://nature-air.com.tw/upload/files/coin-master-spin-ml-link_GM406889139.pdfIn PDF document text
- https://nature-air.com.tw/upload/files/roblox-hack-exploit-jailbreak_GM431946152.pdfIn PDF document text
- https://nature-air.com.tw/upload/files/hack-any-roblox-account-program_GM431946152.pdfIn PDF document text
- https://nature-air.com.tw/upload/files/how-to-make-your-roblox-game-famous-for-free_GM431946152.pdfIn PDF document text
- https://nature-air.com.tw/upload/files/free-robux-without-verify_GM431946152.pdfIn PDF document text
- https://nature-air.com.tw/upload/files/wurst-hacked-client-112-2_GM479516143.pdfIn PDF document text
- https://nature-air.com.tw/upload/files/roblox-avatar-girl_GM431946152.pdfIn PDF document text
- https://nature-air.com.tw/upload/files/robux_GM431946152.pdfIn PDF document text
- https://nature-air.com.tw/upload/files/coin-master-free-cards_GM406889139.pdfIn PDF document text
- https://nature-air.com.tw/upload/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
- https://nature-air.com.tw/upload/files/what-is-robux_GM431946152.pdfIn PDF document text
- https://nature-air.com.tw/upload/files/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
- https://nature-air.com.tw/upload/files/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://nature-air.com.tw/upload/files/www-robux-com_GM431946152.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
`font_00_sfnt_off00002d98.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2D98	22276 bytes
SHA-256: `f6382de6f1f5a2810fcba64d5f23db686689beeab46deeaacaf89a8cde6d0cb7`
`font_01_sfnt_off00005f13.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F13	19248 bytes
SHA-256: `e5952be7d9271312a9b2d6eddaf481402dfbb03ccbb26774cbdad787e04a2e77`

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