Malicious PDF — malware analysis report

Static analysis result for SHA-256 a757997b49eaccb9…

MALICIOUS

PDF

136.8 KB Created: 2011-09-08 05:03:17 Authoring application: FPDF 1.6
MD5: 6ce6a4a91dc52087c03423abb5e8217c SHA-1: f203b5c2a4780b022aa225fea0823efa6c6d7c24 SHA-256: a757997b49eaccb97bf37ad671708751bb957bcd0dd3239e1fc9290bb0ea61f3
78 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV with the signature Pdf.Exploit.Agent-36874, indicating a known PDF exploit. The presence of XFA forms and AcroForm buttons with action triggers further suggests malicious intent within the PDF structure. While no specific script was extracted, the exploit likely leverages embedded content to achieve its objective, such as downloading a second-stage payload.

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
881e825c79704d88ee5001d946e89395dfd67e0e01689e0163e97308cb2f61b6
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x8ED 1415 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).