Malicious PDF — malware analysis report

Static analysis result for SHA-256 dee492bc027f8a0a…

MALICIOUS

PDF

39.5 KB Created: 2021-07-01 15:53:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: aa17806b8f0ef9c11844e9247c262e42 SHA-1: 7cf46af081cc6bdaedca3b951c4f68e532752dcb SHA-256: dee492bc027f8a0a2c7483588591d3716f72ee9883d6653c9d5a95dea0f3befd
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document body and extracted URLs indicate a lure for free Robux, a common tactic for distributing malware. The PDF contains an embedded URI pointing to a suspicious download URL, likely serving a malicious payload. The presence of a visual download button and callback lure heuristics further support a phishing or scam-related attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 4

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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 http://netcdn.co/app/431946152/free-robux-no-human-verification-superfast-inspect-no-password-2021-game-hack
    • https://www.summerland.com.tw/upload/files/hacked-by-roblox-i_GM431946152.pdf
    • https://www.summerland.com.tw/upload/files/how-can-i-play-minecraft-for-free_GM479516143.pdf
    • https://www.summerland.com.tw/upload/files/minecraft-login-free_GM479516143.pdf
    • https://www.summerland.com.tw/upload/files/hackear-el-roblox-med-city-noma_GM431946152.pdf
    • https://www.summerland.com.tw/upload/files/roblox-hacked-com-2021_GM431946152.pdf
    • https://www.summerland.com.tw/upload/files/roblox-apk-hack-no-survey_GM431946152.pdf
    • https://www.summerland.com.tw/upload/files/free-robux-no-downloading-apps_GM431946152.pdf
    • https://www.summerland.com.tw/upload/files/mega-hacks-roblox_GM431946152.pdf
    • https://www.summerland.com.tw/upload/files/roblox-rb-world-2-cheat-engine_GM431946152.pdf
    • https://www.summerland.com.tw/upload/files/robux-codes-free-bots-allowed_GM431946152.pdf
    • https://www.summerland.com.tw/upload/files/hack-roblox-gratuito_GM431946152.pdf
    • https://www.summerland.com.tw/upload/files/auto-clicker-hack-roblox-download_GM431946152.pdf
    • https://www.summerland.com.tw/upload/files/free-robux-quiz_GM431946152.pdf
    • https://www.summerland.com.tw/upload/files/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdf
    • https://www.summerland.com.tw/upload/files/how-to-get-tiktok-likes-for-free_GM835599320.pdf
    • https://www.summerland.com.tw/upload/files/free-x-club-roblox_GM431946152.pdf
    • https://www.summerland.com.tw/upload/files/synapse-roblox-hack-download_GM431946152.pdf
    • https://www.summerland.com.tw/upload/files/how-to-hack-on-roblox-no-usb-no-download_GM431946152.pdf
    • https://www.summerland.com.tw/upload/files/how-to-install-roblox-jailbreak-hacks_GM431946152.pdf
    • https://www.summerland.com.tw/upload/files/how-to-get-free-clothes-roblox-2021_GM431946152.pdf
    • https://www.roblox.com/.I
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003dcd.bin
dd35ad51babbedc038e967ec364dd1e44c672898906869c379e9d0a69ca1d9d1
pdf-font-stream PDF embedded font (sfnt) at offset 0x3DCD 23120 bytes
font_01_sfnt_off000071cb.bin
b83dbf89e3ed1ac391bdddd11847ab919274ab56b3da5b7bb8208532461816eb
pdf-font-stream PDF embedded font (sfnt) at offset 0x71CB 20404 bytes