PDF malware analysis — malicious · 20fb1aa661a310ea

MALICIOUS

PDF

43.4 KB Created: 2021-05-19 06:33:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 893bedd4701843a2f365c41b2e23ea35 SHA-1: b59e96eebb9b2471f88e619ff1718f623f4ce057 SHA-256: 20fb1aa661a310ea7f132562b565be71e97bf120e4deea42261ccbfaf9a55c35

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of external links, many of which are structured as SEO-friendly article gateways pointing to game-related hacks and cheats. One prominent URL, https://netcdn.xyz/app/406889139/coin-master-hack-apk-with-fb-login-game-hack, suggests a direct download lure. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent behind the link farm.

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 https://netcdn.xyz/app/406889139/coin-master-hack-apk-with-fb-login-game-hack
- https://www.acacss.com/images/is-roblox-free-on-xbox_GM431946152.pdf
- https://www.acacss.com/images/coin-master-free-spins-may-11-2021_GM406889139.pdf
- https://www.acacss.com/images/how-to-make-a-free-minecraft-account_GM479516143.pdf
- https://www.acacss.com/images/minecraft-esp_GM479516143.pdf
- https://www.acacss.com/images/free-modded-minecraft-server_GM479516143.pdf
- https://www.acacss.com/images/minecraft-games-free-to-play-online_GM479516143.pdf
- https://www.acacss.com/images/coin-master-hack-no-human-verification_GM406889139.pdf
- https://www.acacss.com/images/how-to-hack-someones-roblox-account_GM431946152.pdf
- https://www.acacss.com/images/free-robux-generator-com-roblox-hack_GM431946152.pdf
- https://www.acacss.com/images/best-site-for-free-coin-master-free-spins_GM406889139.pdf
- https://www.acacss.com/images/how-can-i-get-free-spins-on-coin-master_GM406889139.pdf
- https://www.acacss.com/images/all-minecraft-handbooks_GM479516143.pdf
- https://www.acacss.com/images/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdf
- https://www.acacss.com/images/how-to-hack-a-minecraft-server_GM479516143.pdf
- https://www.acacss.com/images/free-coin-master-spins-2021_GM406889139.pdf
- https://www.acacss.com/images/how-do-you-earn-robux-on-roblox_GM431946152.pdf
- https://www.acacss.com/images/coin-master-daily-free-spins-2021_GM406889139.pdf
- https://www.acacss.com/images/login-robux_GM431946152.pdf
- https://www.acacss.com/images/coin-master-free-spons-apk-2021_GM406889139.pdf
- https://www.acacss.com/images/how-to-log-out-of-coin-master_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_off00004a26.bin` `286cc534c260022fb59300b802e98f7a0b72ec5e75ab2f4b7fd9b8048f816210`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4A26	25768 bytes
`font_01_sfnt_off0000859c.bin` `5fb514d72b6a3127ebf70d681bf63e452f11a73e305fe10841396b7649d51be9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x859C	18868 bytes

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