PDF malware analysis — malicious · dad2a61b312d2f24

MALICIOUS

PDF

42.4 KB Created: 2021-05-15 05:32:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 2ef07af0d715375122a4fd1cf1a6b357 SHA-1: 121cafe525eb07ee2b2885fdac62d9262d403025 SHA-256: dad2a61b312d2f240a8b7f2fdf8aa0195baf22d2fe5161c9cab15ea98aba9496

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which point to other PDFs, suggesting a link farm designed to attract traffic. The document body and extracted URLs indicate a lure related to game cheats and free spins, a common tactic for distributing malware. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

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/coin-master-free-spins-ios-2021-game-hack
- https://kunstmalen.ch/images/free-coins-for-coin-master_GM406889139.pdf
- https://kunstmalen.ch/images/roblox-arsenal-hack-script-pastebin_GM431946152.pdf
- https://kunstmalen.ch/images/coin-master-free-coins-link_GM406889139.pdf
- https://kunstmalen.ch/images/how-to-get-free-robux-on-pc_GM431946152.pdf
- https://kunstmalen.ch/images/coin-master-free-spin-and-trading_GM406889139.pdf
- https://kunstmalen.ch/images/coin-master-free-stuff_GM406889139.pdf
- https://kunstmalen.ch/images/coin-master-hack-cheat-generator-d_GM406889139.pdf
- https://kunstmalen.ch/images/roblox-free-hats_GM431946152.pdf
- https://kunstmalen.ch/images/coin-master-link-for-spins_GM406889139.pdf
- https://kunstmalen.ch/images/blox-world-free-robux_GM431946152.pdf
- https://kunstmalen.ch/images/how-to-get-minecraft-for-free-on-mac_GM479516143.pdf
- https://kunstmalen.ch/images/can-you-get-free-robux-on-roblox_GM431946152.pdf
- https://kunstmalen.ch/images/coin-master-hack-to-get-free-spins_GM406889139.pdf
- https://kunstmalen.ch/images/free-roblox-hair-boy_GM431946152.pdf
- https://kunstmalen.ch/images/what-is-robux-in-roblox_GM431946152.pdf
- https://kunstmalen.ch/images/coin-master-2021-free-spins_GM406889139.pdf
- https://kunstmalen.ch/images/hacks-minecraft_GM479516143.pdf
- https://kunstmalen.ch/images/free-robux-generator-for-kids_GM431946152.pdf
- https://kunstmalen.ch/images/coin-master-hack-tool_GM406889139.pdf
- https://kunstmalen.ch/images/how-to-get-a-free-minecraft-account_GM479516143.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_off00004b6d.bin` `5c5214d782be7ca11a8586db1be792416eb9b15003ffb233fa2c3dd27aa7422f`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4B6D	24372 bytes
`font_01_sfnt_off00008334.bin` `2b6efa5e62152ff8c49d64075f52aeeb5d732445f14fabab56fec2f8f3dafea1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8334	18288 bytes

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