PDF malware analysis — malicious · 463771b850ba1891

MALICIOUS

PDF

42.5 KB Created: 2021-05-15 07:48:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 19379b4dc637f8fb6a9a688785726dc3 SHA-1: 3a5846bd41e756ec60aafb5800dd1d75a0beaeec SHA-256: 463771b850ba189190a4f085f137b8c4b631804b01232635e47c90e83714f275

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 SEO-optimized and point to websites offering in-game currency or hacks. The ML classifier strongly flagged this PDF as malicious, and the presence of a download button lure reinforces the malicious intent. The primary attack pattern appears to be a scam or phishing attempt to direct users to potentially harmful websites.

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/431946152/earn-robux-now-game-hack
- https://ccej.lviv.ua/images/free-coin-master-spins-2021_GM406889139.pdf
- https://ccej.lviv.ua/images/archery-master-3d-hack-unlimited-coins-cheats_GM406889139.pdf
- https://ccej.lviv.ua/images/how-to-get-free-robux-promo-codes_GM431946152.pdf
- https://ccej.lviv.ua/images/how-to-get-free-hair-on-roblox-2021_GM431946152.pdf
- https://ccej.lviv.ua/images/free-foxy-food-coin-master_GM406889139.pdf
- https://ccej.lviv.ua/images/how-to-earn-robux-for-free-2021_GM431946152.pdf
- https://ccej.lviv.ua/images/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdf
- https://ccej.lviv.ua/images/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdf
- https://ccej.lviv.ua/images/minecraft-free-computer-game_GM479516143.pdf
- https://ccej.lviv.ua/images/free-robux-no-verify-2021_GM431946152.pdf
- https://ccej.lviv.ua/images/minecraft-client-download_GM479516143.pdf
- https://ccej.lviv.ua/images/app-for-free-spins-on-coin-master_GM406889139.pdf
- https://ccej.lviv.ua/images/coin-master-free-spins-link-today-new-2021_GM406889139.pdf
- https://ccej.lviv.ua/images/how-to-download-minecraft-hacks_GM479516143.pdf
- https://ccej.lviv.ua/images/free-robux-2021_GM431946152.pdf
- https://ccej.lviv.ua/images/coin-master-free-spins-hack-iphone_GM406889139.pdf
- https://ccej.lviv.ua/images/free-spins-on-coin-master-2021_GM406889139.pdf
- https://ccej.lviv.ua/images/coin-master-free-cards_GM406889139.pdf
- https://ccej.lviv.ua/images/free-robux-sites-2021_GM431946152.pdf
- https://ccej.lviv.ua/images/coin-master-free-cards-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_off000049b5.bin` `5dd833e9915ffb5f3d740b5743fb3178c7ab00c0dbb266c6715cd9fb7e0ed33f`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x49B5	25892 bytes
`font_01_sfnt_off000083b9.bin` `c4f4d96dd4ae320374aba47736520dcd557f712ab2f623cefa09a16c6934ef42`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x83B9	18244 bytes

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