Malicious PDF — malware analysis report

Static analysis result for SHA-256 80c833b309e2465c…

MALICIOUS

PDF

235.0 KB Created: 2021-04-04 19:15:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 0f1924830a9c3f95049116f22cb459ad SHA-1: 3222adc86a22b3a3b07427d4ea7fccaafdf26c18 SHA-256: 80c833b309e2465cab79e818e433eee61321d2fc52f56e0b587bdd2a0bbe6dfd
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 it is a PDF phishing lure related to Roblox. The embedded URI points to a URL that promises information on 'how to be a hacker' in Roblox, reinforcing the phishing/scam theme. Although no scripts were explicitly extracted, the PDF format and the nature of the lure suggest potential for embedded JavaScript or other exploit mechanisms.

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/como-ser-hacker-en-roblox-adopt-me 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_off000355dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x355DD 22096 bytes
SHA-256: 14505e3f421ed57761aec1e279bf9850c4311c78c32d25ab3356e8ce4355e9de
font_01_sfnt_off00038683.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38683 18628 bytes
SHA-256: 57b2d5e231f4710b97e43b49a9b7a685957598468764b4fcf39219278ac3aa80