Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab83126d11c295eb…

MALICIOUS

PDF

235.1 KB Created: 2021-04-04 17:06:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: fc3f201ec3c9d61872c8dce8aaf675ec SHA-1: 96c063651e53c4f74ee22f7945bd047926c21866 SHA-256: ab83126d11c295ebbb332e8fb0ee428bd6e66452b99a329a4a455ecb0a133bd0
72 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with a specific signature indicating a phishing lure related to Roblox accounts. The embedded URI points to a website offering free Roblox usernames and passwords, reinforcing the phishing pretext. Although no scripts were extracted, the PDF structure and embedded URI suggest an attempt to redirect users to a malicious site for credential harvesting.

Machine Learning

  • Nyx PDF Classifier clean score 0.0491

Heuristics 4

  • ClamAV: Pdf.Phishing.Roblox062100-9873116-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Roblox062100-9873116-0
  • 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://gaminggenerator.org/app/431946152/free-roblox-usernames-and-passwords PDF link annotation
    • 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_off000356ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x356EF 21728 bytes
SHA-256: d98a72e934616c5ec29a2799ce6dd6e8b315bf6c1aeaada072584624d3018cc2
font_01_sfnt_off000386a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x386A2 18700 bytes
SHA-256: 0b59e3a2bed4877e2fc7e1a23df944d35c7382988dee49c164afc1ced823dd39

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