Malicious PDF — malware analysis report

Static analysis result for SHA-256 8326eab086ffb55d…

MALICIOUS

PDF

36.4 KB Created: 2021-05-21 15:45:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 21451e1087e7aa63d49fbf3bc94ec2c9 SHA-1: 7d905df66fce038cd1fb56f7770765589e657312 SHA-256: 8326eab086ffb55dfba477f8ad9109eb46d50df0d4f758fa88590744d13a74ab
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains embedded links and social engineering lures, specifically a 'ClickFix' style attack, to trick users into downloading further content. The primary URL, https://netcdn.xyz/app/479516143/free-minecraft-premium-account-game-hack, is associated with the lure of free game items. While no scripts were directly extracted, the PDF structure and heuristics suggest it's designed to exploit user interaction for malicious purposes, likely leading to the execution of further payloads.

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/free-minecraft-premium-account-game-hack PDF link annotation
    • http://advancedaudiosystems.org/images/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://advancedaudiosystems.org/images/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://advancedaudiosystems.org/images/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://advancedaudiosystems.org/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://advancedaudiosystems.org/images/is-minecraft-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000034b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34B2 25120 bytes
SHA-256: bfbfa71e131371afeabb58f4db2cacbb47c6211cbde5e717e7161103ea52d097
font_01_sfnt_off00006d2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D2C 18264 bytes
SHA-256: d2b91c2a6de84c5c57e6f7a8c0463896f89b33dea675ffd93dbde2c8d35c79e1

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