Malicious PDF — malware analysis report

Static analysis result for SHA-256 61ef809e30978482…

MALICIOUS

PDF

235.1 KB Created: 2021-04-04 18:39:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 9a7f4bdab601e4f3c2d56af8936c3bf0 SHA-1: cbdaa370dcea4feeb1bf00dd80f69218853265f5 SHA-256: 61ef809e309784824ece89c881f7de52af2c78746019c50238f11768e75395bd
112 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV. It uses a clipboard-command (paste-and-run) lure. The file presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier clean score 0.0491

Heuristics 5

  • ClamAV: Pdf.Phishing.Roblox062100-9873116-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Roblox062100-9873116-0
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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/i-want-free-robux-no-human-verification 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_off000356a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x356A0 21964 bytes
SHA-256: 8665da5fa16071cfedee7ac207340216e04c6990d10152a8dc290c802a20fe9e
font_01_sfnt_off00038695.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38695 18752 bytes
SHA-256: f42f24eefb39643db76e3d0841857503d7feb993f325546455129b8ba9645309