Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f42af52cf2bf312…

MALICIOUS

PDF

136.8 KB Created: 2011-09-08 05:03:17 Authoring application: FPDF 1.6
MD5: 525361399af3f38a5146aeacb4731acc SHA-1: 0c5f5743e4fe33fea6ddf93c651beae6a98a709f SHA-256: 3f42af52cf2bf312eb2d1fa1986e3d309d609d50796050bfe360d3246973fa42
78 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File

The file is identified as malicious by ClamAV with the signature Pdf.Exploit.Agent-36874. Static analysis indicates the presence of XFA forms and AcroForm buttons with action triggers, common in PDF exploits. An embedded, decompressed stream artifact suggests the delivery of a secondary 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
9b41833340462230149a0fd6c6be47207c77af10ae6004f179d8b165e145213f
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x8ED 1428 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).