PDF malware analysis — malicious · a53ff69d49f16e99

MALICIOUS

PDF

46.9 KB Created: 2021-05-16 14:00:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 3f9a4ef785bd78cb85558f27ee8631d8 SHA-1: e612f747442681f17832ba6e2b2e6340966d6188 SHA-256: a53ff69d49f16e99812e99b883df181a5b856f4b615abad57fec4f4857892e04

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are structured as a link farm for SEO purposes, suggesting an attempt to distribute malicious content or redirect users to phishing sites. The document body and extracted URLs indicate a lure related to game hacks and cheats, a common social engineering tactic. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest it's designed to lead users to malicious resources.

Machine Learning

Nyx PDF Classifier malicious score 0.8948

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/roblox-hack-game-game-hack
- https://leechan.cn/Public/upload/editorfiles/levvvel-coin-master_GM406889139.pdf
- https://leechan.cn/Public/upload/editorfiles/freerobuxhack-us-2021_GM431946152.pdf
- https://leechan.cn/Public/upload/editorfiles/minecraft-windows-free_GM479516143.pdf
- https://leechan.cn/Public/upload/editorfiles/roblox-online-free-no-download_GM431946152.pdf
- https://leechan.cn/Public/upload/editorfiles/how-to-hack-to-get-robux_GM431946152.pdf
- https://leechan.cn/Public/upload/editorfiles/how-to-get-free-robux-for-real_GM431946152.pdf
- https://leechan.cn/Public/upload/editorfiles/free-coins-and-spins-2021_GM406889139.pdf
- https://leechan.cn/Public/upload/editorfiles/how-to-get-800-robux-for-free_GM431946152.pdf
- https://leechan.cn/Public/upload/editorfiles/coin-master-free-spin-link-today-download_GM406889139.pdf
- https://leechan.cn/Public/upload/editorfiles/coin-master-free-cards-link_GM406889139.pdf
- https://leechan.cn/Public/upload/editorfiles/hack-coin-master-using-cheat-engine_GM406889139.pdf
- https://leechan.cn/Public/upload/editorfiles/free-roblox-girl-hair-not-a-model_GM431946152.pdf
- https://leechan.cn/Public/upload/editorfiles/get-free-spins-in-coin-master_GM406889139.pdf
- https://leechan.cn/Public/upload/editorfiles/hack-coin-master-game-apk_GM406889139.pdf
- https://leechan.cn/Public/upload/editorfiles/coin-master-game-free-download-for-pc_GM406889139.pdf
- https://leechan.cn/Public/upload/editorfiles/free-minecraft-wallpaper_GM479516143.pdf
- https://leechan.cn/Public/upload/editorfiles/is-minecraft-free-on-switch_GM479516143.pdf
- https://leechan.cn/Public/upload/editorfiles/cute-free-hair-on-roblox_GM431946152.pdf
- https://leechan.cn/Public/upload/editorfiles/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdf
- https://leechan.cn/Public/upload/editorfiles/coin-master-get-free-cards_GM406889139.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004a41.bin` `bd98c9b92d7ed1da3d14ab1bb3b666ef3e2c3dc7b1e535b2aba216af96d84a2f`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4A41	27800 bytes
`font_01_sfnt_off00008aa5.bin` `3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8AA5	2840 bytes
`font_02_sfnt_off00009457.bin` `ebafd2a9612b8145e5e0fd0fae0a522d36691e15007df27d7d415ea6fce26a90`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9457	18440 bytes

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