SUSPICIOUS — robux-free-robux_GM431946152.pdf

SUSPICIOUS — robux-free-robux_GM431946152.pdf is a pdf sample analyzed by MalwareAnalyzer by Cyble with a suspicious verdict (58/100). 4 of 53 detection engines flagged it, exhibiting 1 ATT&CK technique.

Identification

• SHA-256: 8dd69a9efad379f99305f09474e8312c5c7b91128a6ecbda3c8383873211b4d5
• SHA-1: b5d63752e9d12441f37cb3762207f770122a14a3
• MD5: 687ac7a7e618974dd543f63ca6ea5b1f
• ssdeep: 768:5inSEmP3bdDubdoAqFpF6VCYhss7hFwKpYBHRIIIIIIh4i2pgMdFNbWX4Ze:5iSLP3RDub2FOVIszmxIIIIIIhYp7FNu
• TLSH: T10B329FF72167DD5C2A899F03657A216DB18AE3CC32219E1456C43B7CC0BC7EE6B10A61
• Submitted as: robux-free-robux_GM431946152.pdf
• File type: pdf · Size: 43839 bytes
• Verdict: suspicious (58/100)

Detections (4 of 53 engines)

• MalwareAnalyser heuristics (entropy/packer): high-entropy-blob
• Microsoft Defender: Trojan:PDF/Phish.CFN!MTB
• Emsisoft (Emergency Kit): PDF.Spam.Heur.2
• Trellix Stinger (McAfee): PDF/Phish-TWM!687AC7A7E618

MITRE ATT&CK

• T1566.002

Why this verdict

The suspicious score of 58/100 is the fusion of 4 weighted signals:

• Embedded link rated suspicious by URL analysis: http://instrutech.co.th/images/bux-free-robux_GM431946152.pdf - network signal, weight 0.40, confidence 0.60
• Embedded network infrastructure: https://netcdn.xyz/app/431946152/robux-free-robux-game-hack, http://instrutech.co.th/images/coinmaster-rewards_GM406889139.pdf, http://instrutech.co.th/images/bux-free-robux_GM431946152.pdf - static signal, weight 0.35, confidence 0.60
• Document active content: uri-action - static signal, weight 0.30, confidence 0.60
• Packing/obfuscation: high-entropy-blob - static signal, weight 0.25, confidence 0.55

Dynamic analysis

No runtime behaviour was captured for this sample, so the analysis above is static only. That is a limit of this run rather than evidence the sample does nothing.

Embedded URLs

• https://netcdn.xyz/app/431946152/robux-free-robux-game-hack
• http://instrutech.co.th/images/coinmaster-rewards_GM406889139.pdf
• http://instrutech.co.th/images/bux-free-robux_GM431946152.pdf
• http://instrutech.co.th/images/free-minecraft-shaders_GM479516143.pdf
• http://instrutech.co.th/images/roblox-hack-site_GM431946152.pdf
• http://instrutech.co.th/images/coin-master-hack-mobile_GM406889139.pdf
• http://instrutech.co.th/images/rblx-gg-free-robux_GM431946152.pdf
• http://instrutech.co.th/images/free-spins-on-coin-master_GM406889139.pdf
• http://instrutech.co.th/images/robux-games_GM431946152.pdf
• http://instrutech.co.th/images/earn-robux-for-roblox_GM431946152.pdf
• http://instrutech.co.th/images/coin-master-free-spins-link-2021-twitter_GM406889139.pdf
• http://instrutech.co.th/images/how-to-get-free-robux-no-verification_GM431946152.pdf

Embedded domains

• netcdn.xyz
• instrutech.co.th

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report