PDF malware analysis — malicious · c31c29e3a1c27084

MALICIOUS

PDF

42.2 KB Created: 2021-05-14 21:55:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 125ff541517a27d4ceaa1f1d5ea34ba7 SHA-1: d0c45eceb4cb25b5d1cbbd313f2b76e5f86c8988 SHA-256: c31c29e3a1c27084c9f10e00ed276823c9d8c51d4300df802f305ecf08687a3c

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 are structured as SEO-optimized PDF links pointing to game-related hacks and downloads. The ML classifier strongly indicated maliciousness, and the presence of numerous external URIs suggests a link farm designed to redirect users to potentially harmful content. The document body, though partially corrupted, contains a URL that aligns with the observed link farm strategy.

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-apk-free-download-game-hack
- http://caraless.com/images/how-to-get-free-robux-hack_GM431946152.pdf
- http://caraless.com/images/coin-master-pc-hack_GM406889139.pdf
- http://caraless.com/images/how-to-get-free-robux-easy-no-download_GM431946152.pdf
- http://caraless.com/images/coin-master-hack-spins-android_GM406889139.pdf
- http://caraless.com/images/free-spin-hack-coin-master-2021_GM406889139.pdf
- http://caraless.com/images/coin-master-free-spins-link-2021_GM406889139.pdf
- http://caraless.com/images/free-robux-games-on-roblox_GM431946152.pdf
- http://caraless.com/images/how-to-get-free-robux-without-verification_GM431946152.pdf
- http://caraless.com/images/robux-boost_GM431946152.pdf
- http://caraless.com/images/blox-best-robux_GM431946152.pdf
- http://caraless.com/images/coin-master-free-spins-youthnow_GM406889139.pdf
- http://caraless.com/images/free-robux-generator-no-human-verification-2021_GM431946152.pdf
- http://caraless.com/images/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdf
- http://caraless.com/images/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdf
- http://caraless.com/images/minecraft-116-free-download_GM479516143.pdf
- http://caraless.com/images/minecraft-free-download-windows-10_GM479516143.pdf
- http://caraless.com/images/free-robux-come_GM431946152.pdf
- http://caraless.com/images/free-minecraft-alts_GM479516143.pdf
- http://caraless.com/images/free-robux-websites-that-actually-work-2021_GM431946152.pdf
- http://caraless.com/images/coin-master-free-coins-link-2021_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_off000047af.bin` `4a91e98137d087d76c3887698ac0183b78b797c48a74aac1b67eb1a31e8ad9bb`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x47AF	25508 bytes
`font_01_sfnt_off00008175.bin` `352d929b5f45d1d816cf71c40016a6b8bab10c0c0acb2d1be8608963c5a906f7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8175	18636 bytes

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