PDF malware analysis — malicious · 0753161d5b75dc8f

MALICIOUS

PDF

42.3 KB Created: 2021-05-14 17:02:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 2c98145c083eee7cb732e69382ae3a5e SHA-1: 73bfd17642fb04a8d87d83ff415d74ad6806468d SHA-256: 0753161d5b75dc8fc681a6e326610f4fc65499471a0d12308eaccf7c24d7c19c

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which are part of a link farm, directing users to sites offering game hacks and free accounts. The ML classifier and heuristic firings strongly indicate malicious intent, likely to lead users to phishing or malware download sites. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest a malicious workflow.

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/get-free-roblox-game-hack
- http://astdubai.co/userfiles/files/coin-master-hack-to-get-free-spins_GM406889139.pdf
- http://astdubai.co/userfiles/files/ultimate-free-spins-coin-master_GM406889139.pdf
- http://astdubai.co/userfiles/files/free-minecraft-account-and-password_GM479516143.pdf
- http://astdubai.co/userfiles/files/coin-master-guide-to-free-spins-and-rewards_GM406889139.pdf
- http://astdubai.co/userfiles/files/free-pet-food-for-coin-master_GM406889139.pdf
- http://astdubai.co/userfiles/files/minecraft-windows-10-edition-free-with-java_GM479516143.pdf
- http://astdubai.co/userfiles/files/coin-master-unlimited-free-spins-link-2021_GM406889139.pdf
- http://astdubai.co/userfiles/files/roblox-mobile-hack_GM431946152.pdf
- http://astdubai.co/userfiles/files/free-roblox-hair-codes_GM431946152.pdf
- http://astdubai.co/userfiles/files/coin-master-hack-unlimited-spins-apk_GM406889139.pdf
- http://astdubai.co/userfiles/files/coin-master-time-hack_GM406889139.pdf
- http://astdubai.co/userfiles/files/minecraft-java-edition-key-free_GM479516143.pdf
- http://astdubai.co/userfiles/files/how-to-get-free-robux-hack_GM431946152.pdf
- http://astdubai.co/userfiles/files/www-free-robux_GM431946152.pdf
- http://astdubai.co/userfiles/files/minecraft-hack-client-18-9_GM479516143.pdf
- http://astdubai.co/userfiles/files/how-do-you-get-roblox-for-free_GM431946152.pdf
- http://astdubai.co/userfiles/files/mcpe-download_GM479516143.pdf
- http://astdubai.co/userfiles/files/minecraft-hacked-client_GM479516143.pdf
- http://astdubai.co/userfiles/files/coin-master-fun-hack-online_GM406889139.pdf
- http://astdubai.co/userfiles/files/free-robux-without-verification-2021_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_off00004715.bin` `be8a266b9b108a81783942fe2c9fdecbee60a83cbe0a022322a4ae2e86c9759e`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4715	26856 bytes
`font_01_sfnt_off00008382.bin` `3163a373a79a6ba2b402f3bc3abf4e04b0a5713e8f73e060e65042d4a11df7ac`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8382	18052 bytes

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