Malicious PDF — malware analysis report

Static analysis result for SHA-256 b09465de7cca02bd…

MALICIOUS

PDF

136.8 KB Created: 2011-09-08 05:03:17 Authoring application: FPDF 1.6
MD5: 8a947f80a3d0c1e050328163b579e6a8 SHA-1: 56598f20dd079d4e5214464183c1b111aaf2e435 SHA-256: b09465de7cca02bd50c44a8949e2151ca261c033f1b37d03c1e5e19850f17c9b
78 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.002 Spearphishing Attachment

The PDF file was flagged by ClamAV as Pdf.Exploit.Agent-36874, indicating a known exploit. The presence of XFA forms and AcroForm buttons suggests an attempt to embed interactive elements that could trigger exploits. An embedded binary stream was also extracted, likely containing the malicious payload. The document body contains obfuscated text, further supporting a malicious intent.

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
e3b40280757c2492233e482d552c00cef2cb7340ffa9d2c6423bba482153c6ad
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x8ED 1429 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).