Malicious PDF — malware analysis report

Static analysis result for SHA-256 c39711ab68517e0d…

MALICIOUS

PDF

36.4 KB Created: 2021-05-21 13:35:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 37b2e82aa06c84fa9da008e29b80bbfc SHA-1: 580514b24fadcc4c7caf0c60f82a6136e3b053a1 SHA-256: c39711ab68517e0d52035fe59f0682e8ffb85a645a115948f2fc8ab1647be4ce
82 Risk Score

Malware Insights

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

The PDF document contains social engineering lures, specifically a "ClickFix" attack pattern, instructing the user to click a link disguised as a "Minecraft Realms Free Codes" generator. The embedded URL and other related URLs point to domains hosting potentially malicious content or further lures. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

Heuristics 4

  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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/479516143/minecraft-realms-free-codes-game-hack
    • http://aircraft.by/images/coin-master-spins_GM406889139.pdf
    • http://aircraft.by/images/how-to-get-free-robux-without-verification-2021_GM431946152.pdf
    • http://aircraft.by/images/roblox-hack-tool_GM431946152.pdf
    • http://aircraft.by/images/free-spins-coin-master-no-human-verification_GM406889139.pdf
    • http://aircraft.by/images/no-human-verification-coin-master-hack_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000348d.bin
b5f589ef7dbd499a41ce2ac7577e9d9142e2156e1c8d3b70bba7be9d708a439a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x348D 24956 bytes
font_01_sfnt_off00006d74.bin
30a8f83054e231b1bb485b1ca025b33fda8ee43bcea67b958af1de796f39c45f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D74 18216 bytes

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