PDF malware analysis — malicious · 28c43f691dbdd5c4

MALICIOUS

PDF

40.7 KB Created: 2021-05-16 06:16:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: d496ab10b3596d86967225a982069232 SHA-1: 7e5be3a3dffc2d9b29141a91eab64bb06fb96cfa SHA-256: 28c43f691dbdd5c495d77df3b093213c3ee8f6a16e5bdb24c96042bca4e47d39

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous external links, identified as a link farm, likely intended to drive traffic to other sites. The document body and extracted URLs suggest a lure related to game hacks and free in-game currency. While no scripts were explicitly extracted, the PDF structure and the presence of external links indicate a potential for malicious redirection or content delivery, aligning with a spearphishing attachment tactic.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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/406889139/best-site-for-free-coin-master-game-hack
- https://mixdoors.ru:443/images/free-robux-hack-no-verification_GM431946152.pdf
- https://mixdoors.ru:443/images/play-roblox-for-free-on-google_GM431946152.pdf
- https://mixdoors.ru:443/images/coin-master-free-spins-hack-no-human-verification_GM406889139.pdf
- https://mixdoors.ru:443/images/how-do-you-hack-minecraft_GM479516143.pdf
- https://mixdoors.ru:443/images/roblox-piano-hack_GM431946152.pdf
- https://mixdoors.ru:443/images/how-to-get-free-robux_GM431946152.pdf
- https://mixdoors.ru:443/images/free-coin-master-hacks_GM406889139.pdf
- https://mixdoors.ru:443/images/roblox-robux-hack_GM431946152.pdf
- https://mixdoors.ru:443/images/coin-master-400-spin-link-today_GM406889139.pdf
- https://mixdoors.ru:443/images/mobihack-roblox-hack_GM431946152.pdf
- https://mixdoors.ru:443/images/how-to-get-free-roblox-items_GM431946152.pdf
- https://mixdoors.ru:443/images/roblox-character-free_GM431946152.pdf
- https://mixdoors.ru:443/images/free-spin-link-coin-master-today_GM406889139.pdf
- https://mixdoors.ru:443/images/mcpe-download_GM479516143.pdf
- https://mixdoors.ru:443/images/how-to-hack-roblox-accounts-2021_GM431946152.pdf
- https://mixdoors.ru:443/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdf
- https://mixdoors.ru:443/images/no-human-verification_GM431946152.pdf
- https://mixdoors.ru:443/images/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdf
- https://mixdoors.ru:443/images/how-to-make-robux-on-roblox_GM431946152.pdf
- https://mixdoors.ru:443/images/coin-master-hack-spins-free_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_003_off00004719.bin` `9bdab6b338dce4cc6499a0209c04e873a9e0d8fbdb891f3da4c0cf8c39d85552`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4719	23928 bytes
`font_01_sfnt_off00007dc6.bin` `54ba583de7ef6a44d3440287f67bc1236d632228fc17eebf6d790bd3337eaafd`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7DC6	17924 bytes

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