Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbf4530c22a82d0d…

MALICIOUS

PDF

44.2 KB Created: 2021-05-15 23:51:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 6a61ff7a3d74c785e3510872e90ccd03 SHA-1: 30d595e3333a30b290fcc6bd9813c08333936186 SHA-256: fbf4530c22a82d0d94f4bfbc967cfebfe280777a5abb57d4299a9a6586ddaf6b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'Free Robux' and includes a direct link to a suspicious URL, indicating a phishing or malware distribution attempt. The presence of a 'Password-protected archive handoff' heuristic suggests the document may be intended to trick the user into downloading an encrypted payload. While no scripts were explicitly extracted, the PDF structure and embedded URIs point towards a malicious workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/how-can-i-get-free-robux-game-hack
    • https://www.franchiseinnovations.org/broker-site/files/files/corn-master_GM406889139.pdf
    • https://www.franchiseinnovations.org/broker-site/files/files/50-free-spins-coin-master_GM406889139.pdf
    • https://www.franchiseinnovations.org/broker-site/files/files/roblox-free-draw_GM431946152.pdf
    • https://www.franchiseinnovations.org/broker-site/files/files/haktuts-coin-master-free-spins_GM406889139.pdf
    • https://www.franchiseinnovations.org/broker-site/files/files/coin-master-free-spins-and-coins-app_GM406889139.pdf
    • https://www.franchiseinnovations.org/broker-site/files/files/how-to-hack-golden-card-in-coin-master_GM406889139.pdf
    • https://www.franchiseinnovations.org/broker-site/files/files/coin-master-hack-without-verification-or-downloading-apps_GM406889139.pdf
    • https://www.franchiseinnovations.org/broker-site/files/files/free-robux-generator-without-human-verification_GM431946152.pdf
    • https://www.franchiseinnovations.org/broker-site/files/files/robux_GM431946152.pdf
    • https://www.franchiseinnovations.org/broker-site/files/files/earn-free-robux-for-roblox_GM431946152.pdf
    • https://www.franchiseinnovations.org/broker-site/files/files/coin-master-free-spins-cheat_GM406889139.pdf
    • https://www.franchiseinnovations.org/broker-site/files/files/free-robux-no-verification-no-download-2021_GM431946152.pdf
    • https://www.franchiseinnovations.org/broker-site/files/files/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdf
    • https://www.franchiseinnovations.org/broker-site/files/files/roblox-free-wings_GM431946152.pdf
    • https://www.franchiseinnovations.org/broker-site/files/files/how-to-get-free-robux-by-playing-games_GM431946152.pdf
    • https://www.franchiseinnovations.org/broker-site/files/files/how-to-get-free-robux-without-paying_GM431946152.pdf
    • https://www.franchiseinnovations.org/broker-site/files/files/games-to-get-free-robux_GM431946152.pdf
    • https://www.franchiseinnovations.org/broker-site/files/files/free-minecraft-account-and-password_GM479516143.pdf
    • https://www.franchiseinnovations.org/broker-site/files/files/free-robux-no-scam_GM431946152.pdf
    • https://www.franchiseinnovations.org/broker-site/files/files/coin-master-email-free-spins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c66.bin
05809eabb5dbfc51b73c98196eb8a47c6a1fc430ee05e1c0bb90590f657a9dc2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C66 26860 bytes
font_01_sfnt_off000089e8.bin
69cba7171cc96811b03769255314e8880e2b1f1f28661a6eda79c3c7ec8a929e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89E8 18512 bytes

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