PDF malware analysis — malicious · 4d96183a1ebd4158

MALICIOUS

PDF

43.7 KB Created: 2021-06-13 19:40:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 8af5101c72a90bbc6b3ce31a48947abf SHA-1: ead060c881b7f0a63123fc3fe91af7d29ad18a01 SHA-256: 4d96183a1ebd4158f586a7c44b8076d9125e8ace21b31ecc0921f3f706ccae9b

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links to external websites, many of which are structured as SEO link farms, suggesting a malicious intent to redirect users to potentially harmful content. The document body and embedded URLs explicitly mention game hacks and rewards, indicating a lure for users seeking such content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 0.9969

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 http://netcdn.co/app/431946152/rewards-roblox-com-game-hack
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/free-spins-and-coins-for-coin-master-game_GM406889139.pdf
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/original-roblox_GM431946152.pdf
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/coin-master-game-hack-version-download_GM406889139.pdf
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdf
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdf
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/coin-master-gold-cards-hack_GM406889139.pdf
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/buy-robux-free_GM431946152.pdf
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/coin-master-daily-free-spins-blogspot_GM406889139.pdf
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/free-robux-codes-not-used_GM431946152.pdf
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/minecraft-java-edition-code-free_GM479516143.pdf
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-2021-apk_GM406889139.pdf
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/coin-master-unlimited-spin-hack-mod-apk_GM406889139.pdf
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/free-minecraft-skins-xbox-one_GM479516143.pdf
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/free-roblox-accounts_GM431946152.pdf
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/coin-master-ids-for-free-spins_GM406889139.pdf
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/is-minecraft-java-edition-free_GM479516143.pdf
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/pasos-para-hackear-coins-master_GM406889139.pdf
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/mcpe-master-unlimited-coins-free-download_GM406889139.pdf
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/coin-master-free-stuff-links_GM406889139.pdf
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/blox-world-free-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_off00004acb.bin` `5c49ac18b82e65bc249c47d7a99dea9b25a4cff4481139edba88bec1da201e41`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4ACB	25684 bytes
`font_01_sfnt_off000086c6.bin` `84a69db253878f517567c03d6370f317bacb4a5393bf38d7f608539b8a5f9380`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x86C6	18796 bytes

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