PDF malware analysis — malicious · 150fd76646c9f2de

MALICIOUS

PDF

48.9 KB Created: 2021-05-15 17:06:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 78331378aa9dff5242a85bd4ab8a3931 SHA-1: 453509ff36d01e0b5f1c2d965243638012a69309 SHA-256: 150fd76646c9f2dee0a792a46edbabb52893da8b2305d9a1aa5fbe4d81631c2a

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are structured as SEO-optimized PDF files related to game hacks and free in-game currency. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of such links, and the ML classifier strongly suggests maliciousness. The presence of embedded URIs and the document body's reference to 'free Robux' and a download URL point towards a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9228

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/op-rewards-free-robux-game-hack
- https://trustindoutama.com/assets/CKImages/files/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdf
- https://trustindoutama.com/assets/CKImages/files/minecraft-115-2-hacks_GM479516143.pdf
- https://trustindoutama.com/assets/CKImages/files/roblox-com-free-play_GM431946152.pdf
- https://trustindoutama.com/assets/CKImages/files/coin-master-free-spins-app-for-iphone_GM406889139.pdf
- https://trustindoutama.com/assets/CKImages/files/free-spins-and-coins-coin-master_GM406889139.pdf
- https://trustindoutama.com/assets/CKImages/files/how-to-get-free-robux-on-chromebook_GM431946152.pdf
- https://trustindoutama.com/assets/CKImages/files/free-robux-with-no-survey_GM431946152.pdf
- https://trustindoutama.com/assets/CKImages/files/how-to-hack-coin-master-with-lucky-patcher_GM406889139.pdf
- https://trustindoutama.com/assets/CKImages/files/coinmaster-twitter_GM406889139.pdf
- https://trustindoutama.com/assets/CKImages/files/actual-free-robux_GM431946152.pdf
- https://trustindoutama.com/assets/CKImages/files/how-to-get-free-robux-com_GM431946152.pdf
- https://trustindoutama.com/assets/CKImages/files/how-to-get-free-robux-in-2021_GM431946152.pdf
- https://trustindoutama.com/assets/CKImages/files/how-to-hack-coin-master-with-game-guardian_GM406889139.pdf
- https://trustindoutama.com/assets/CKImages/files/100-free-coin-master-spins_GM406889139.pdf
- https://trustindoutama.com/assets/CKImages/files/free-minecraft-skin-creator_GM479516143.pdf
- https://trustindoutama.com/assets/CKImages/files/can-you-actually-get-free-robux_GM431946152.pdf
- https://trustindoutama.com/assets/CKImages/files/minecraft-free-download-windows-10_GM479516143.pdf
- https://trustindoutama.com/assets/CKImages/files/coin-master-hack-app-android-download_GM406889139.pdf
- https://trustindoutama.com/assets/CKImages/files/free-spin-coin-master-ios_GM406889139.pdf
- https://trustindoutama.com/assets/CKImages/files/free-robux-on-phone_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00004b1c.bin` `042792f1ca69c7632204050b4752e54a69aea6602b82b8db3d20090bb7ae951d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4B1C	29832 bytes
`font_01_sfnt_off00008f07.bin` `8e24205afdd13dcdea98f8150ef77dee4030e0e50a7c748783d1b4598e034a20`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8F07	3464 bytes
`font_02_sfnt_off00009b3d.bin` `060429e30aee9ae32e68a5a96a6a224aa27ea33c727993be362f9dfde6d66d3f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9B3D	18756 bytes

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