PDF malware analysis — malicious · d17cc8be8be87a5d

MALICIOUS

PDF

44.7 KB Created: 2021-05-17 07:11:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 01064a8ef5647a7b49c171dd3891e846 SHA-1: dc5889c89d24a7f23383c237c7e51e5dae7e0326 SHA-256: d17cc8be8be87a5d3d5f754c8f4a4a29049ee47259dce5ab24a3aa744f65acc3

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs and a document body that promotes free Robux and Coin Master cheats, indicating a lure for potentially malicious downloads. The heuristic PDF_SEO_LINK_FARM firing suggests a large number of external links, likely part of a link farm designed to attract users searching for game exploits. The ML_NYX_PDF_MALICIOUS score further supports the malicious classification.

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 https://netcdn.xyz/app/431946152/buxblast-com-robux-game-hack
- https://www.citrus-shop.cz/images/robux-without-verification_GM431946152.pdf
- https://www.citrus-shop.cz/images/hey-google-how-do-you-get-free-robux_GM431946152.pdf
- https://www.citrus-shop.cz/images/make-robux_GM431946152.pdf
- https://www.citrus-shop.cz/images/how-do-we-get-free-robux_GM431946152.pdf
- https://www.citrus-shop.cz/images/robux-free-gift-card_GM431946152.pdf
- https://www.citrus-shop.cz/images/coin-master-hack-apk-free-download_GM406889139.pdf
- https://www.citrus-shop.cz/images/coin-master-hack-spins-apk_GM406889139.pdf
- https://www.citrus-shop.cz/images/robux-converter_GM431946152.pdf
- https://www.citrus-shop.cz/images/coin-master-hack-app_GM406889139.pdf
- https://www.citrus-shop.cz/images/how-can-i-get-free-spins-on-coin-master_GM406889139.pdf
- https://www.citrus-shop.cz/images/all-coin-master-spin-link-and-free-download_GM406889139.pdf
- https://www.citrus-shop.cz/images/coin-master-daily-free-spins_GM406889139.pdf
- https://www.citrus-shop.cz/images/free-robux-codes-no-verification-2021_GM431946152.pdf
- https://www.citrus-shop.cz/images/how-to-get-free-skins-in-minecraft_GM479516143.pdf
- https://www.citrus-shop.cz/images/free-spins-for-coin-master-game_GM406889139.pdf
- https://www.citrus-shop.cz/images/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdf
- https://www.citrus-shop.cz/images/how-to-get-free-robux-without-downloading-apps_GM431946152.pdf
- https://www.citrus-shop.cz/images/get-free-cards-for-coin-master_GM406889139.pdf
- https://www.citrus-shop.cz/images/coin-master-free-400-spin-link_GM406889139.pdf
- https://www.citrus-shop.cz/images/give-me-robux_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004af4.bin` `09ca1591dc575444bac4c457577133fc52ce1189a40de5a5c3ad614be3860e69`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4AF4	29532 bytes
`font_01_sfnt_off00008bc7.bin` `3775a038529c159d2b25bc1091f697070e8458e38db62e4b1d0942abe88cb01b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8BC7	18516 bytes

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