Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a0568347a0b51fe…

MALICIOUS

PDF

136.8 KB Created: 2011-09-08 05:03:17 Authoring application: FPDF 1.6
MD5: 636d719c5f6d0985e86dad04bf3a0d4b SHA-1: 70b9cbbf85d07b6f274ccefad41020317457e528 SHA-256: 2a0568347a0b51fe4daeba178a35a0e72dcac9dec325a59a2043004649aeca61
78 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.001 PowerShell

The critical ClamAV heuristic firing for 'Pdf.Exploit.Agent-36874' strongly indicates a known PDF exploit. The presence of XFA forms and an AcroForm button with an action trigger further supports this, suggesting the PDF is designed to leverage a vulnerability. While no specific script was extracted, the exploit likely leads to the download and execution of a secondary payload, as is common with such exploits.

Heuristics 4

  • ClamAV: Pdf.Exploit.Agent-36874 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36874
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • AcroForm button with action trigger low PDF_ACROFORM_BUTTON
    PDF contains a /Btn form field together with a SubmitForm/URI/Launch/JS trigger — this is the building block of fake 'Download' or 'Open' button overlays used in PDF phishing lures
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_001_off000008ed.bin
06c7279b851bb6dbabe1b23893645c059969a44214dfd7cb80a644a73a7840d3
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x8ED 1456 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).