Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5de420a59b32003…

MALICIOUS

PDF

136.8 KB Created: 2011-09-08 05:03:17 Authoring application: FPDF 1.6
MD5: 65088c73903b1a1d74066bc000d33774 SHA-1: 5a74871b35bebf2d1bc4343989e3e2a9be4d6930 SHA-256: a5de420a59b32003d8d8a9d1b56dd7dc1296bf68fb7179330e52dfeddb31de1d
78 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious File

The file is a PDF document identified by ClamAV as Pdf.Exploit.Agent-36874, indicating a known exploit. The presence of an XFA form and an AcroForm button with an action trigger further suggests malicious intent, likely to exploit a PDF viewer vulnerability. The extracted document body contains obfuscated text, typical of exploit-laden documents.

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
ebf43e23c572616b7103688996fa0696e704bfadf9abd0a95a2b31652a0f6aea
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x8ED 1441 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).