PDF malware analysis — malicious · b2d320687cd73cdf

MALICIOUS

PDF

47.3 KB Created: 2021-06-08 03:24:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 641b33c148fdf223853263da84ace7a1 SHA-1: e292a1ec46134e5894b6293e51f01c6d667f00bc SHA-256: b2d320687cd73cdfb261913eeb7d01930879747080d5d70f7e71bb075f0c3bf0

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, many of which are structured as SEO-optimized URLs pointing to game-related hacks and cheats. The document body, though partially corrupted, includes references to 'hacking codes on Roblox' and a URL that aligns with this theme. The presence of a large number of external links suggests a link farm or a distribution point for potentially malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9832

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 https://netcdn.tw/app/431946152/where-to-type-hacking-codes-on-roblox-game-hack
- https://uofk.edu/images/coin-master-hack-dot-xyz_GM406889139.pdf
- https://uofk.edu/images/coin-master-daily-free-spin-and-coin_GM406889139.pdf
- https://uofk.edu/images/coin-master-free-spins-link-download-free_GM406889139.pdf
- https://uofk.edu/images/free-robux-generator-no-verification-2021_GM431946152.pdf
- https://uofk.edu/images/free-spins-for-coin-master-2021_GM406889139.pdf
- https://uofk.edu/images/robuxmatch-com-free-robux_GM431946152.pdf
- https://uofk.edu/images/www-robux_GM431946152.pdf
- https://uofk.edu/images/free-robux-generator-for-roblox-2021_GM431946152.pdf
- https://uofk.edu/images/coin-master-hack-no-survey_GM406889139.pdf
- https://uofk.edu/images/free-robux-without-downloading-anything_GM431946152.pdf
- https://uofk.edu/images/how-to-hack-coin-master-spin-ios_GM406889139.pdf
- https://uofk.edu/images/coin-master-heaven-free-spins-today_GM406889139.pdf
- https://uofk.edu/images/is-tiktok-free-app_GM835599320.pdf
- https://uofk.edu/images/how-to-get-free-robux-on-phone_GM431946152.pdf
- https://uofk.edu/images/coin-master-hack-spins_GM406889139.pdf
- https://uofk.edu/images/coin-master-free-spin-app-iphone_GM406889139.pdf
- https://uofk.edu/images/how-to-buy-robux-for-free_GM431946152.pdf
- https://uofk.edu/images/coin-master-hack-apk-android_GM406889139.pdf
- https://uofk.edu/images/can-you-make-a-minecraft-server-for-free_GM479516143.pdf
- https://uofk.edu/images/coin-master-free-stuff_GM406889139.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off000055f5.bin` `158e9be0192d06427d5984e5a4de90e8125c9c36fe071c4a133c183c18639057`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x55F5	25916 bytes
`font_01_sfnt_off000092ce.bin` `7ac0c4815f1c677d4704c3fccf0b98592425df7304ff1e2d95bf8efe7022eec1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x92CE	19484 bytes

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