PDF malware analysis — malicious · 418ad6e24a29d575

MALICIOUS

PDF

34.4 KB Created: 2021-07-06 23:35:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: c813966ced8ff233d6210fb0a5bc9814 SHA-1: 6a1dbd87f8cf739b58fc2e1f485187e040a344c0 SHA-256: 418ad6e24a29d57567bad96165c9b1bf7394bc54307f57268bbba244b712584a

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are SEO-optimized PDFs related to game cheats and free currency for games like Roblox and Coin Master. The ML classifier strongly indicates maliciousness, and the presence of a download button lure suggests a deceptive workflow. The document body contains a primary URL that likely serves as the initial lure for this phishing attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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.tw/app/431946152/free-robux-generator-2021-game-hack
- http://bw.ac.th/userfiles/files/how-to-make-a-cool-free-roblox-avatar_GM431946152.pdf
- http://bw.ac.th/userfiles/files/how-to-host-a-minecraft-server-for-free_GM479516143.pdf
- http://bw.ac.th/userfiles/files/coin-master-free-spins-and-coins-blogspot_GM406889139.pdf
- http://bw.ac.th/userfiles/files/toolbox-for-minecraft-pe-mod-apk_GM479516143.pdf
- http://bw.ac.th/userfiles/files/free-robux-no-password-plus-link_GM431946152.pdf
- http://bw.ac.th/userfiles/files/hacking-into-my-brothers-roblox-account_GM431946152.pdf
- http://bw.ac.th/userfiles/files/free-roblox-thumbnail_GM431946152.pdf
- http://bw.ac.th/userfiles/files/coin-master-hack_GM406889139.pdf
- http://bw.ac.th/userfiles/files/roblox-account-taker_GM431946152.pdf
- http://bw.ac.th/userfiles/files/collect-free-spins-for-coin-master_GM406889139.pdf
- http://bw.ac.th/userfiles/files/how-can-i-get-free-robux_GM431946152.pdf
- http://bw.ac.th/userfiles/files/rblx-gg-free-robux-generator_GM431946152.pdf
- http://bw.ac.th/userfiles/files/coin-master-hack-cheat-generator-coins-and-spins-unlimited_GM406889139.pdf
- http://bw.ac.th/userfiles/files/go-through-walls-hack-roblox_GM431946152.pdf
- http://bw.ac.th/userfiles/files/minecraft-pe-apk-free-download_GM479516143.pdf
- http://bw.ac.th/userfiles/files/but-link-says-free-robux_GM431946152.pdf
- http://bw.ac.th/userfiles/files/roblox-hacks-and-cheats_GM431946152.pdf
- http://bw.ac.th/userfiles/files/websites-to-get-free-robux_GM431946152.pdf
- http://bw.ac.th/userfiles/files/how-to-cheat-on-you-roblox-girlfriend_GM431946152.pdf
- http://bw.ac.th/userfiles/files/counter-blox-roblox-offensive-hacks-2021_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00002e18.bin` `e8e2766c64a33677f7c22e6dcd8ffd967e8d066c55cc0692c68264bd8ef71735`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2E18	22592 bytes
`font_01_sfnt_off00006088.bin` `e428ca4c21c8feda58ff9d2cee9e63eb7b19a929803cf1f6eebeef0755d1c14a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6088	19224 bytes

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