Malicious PDF — malware analysis report

Static analysis result for SHA-256 48376e911dfa2fd1…

MALICIOUS

PDF

7.8 KB Created: 2012-04-06 19:15:32
MD5: 1bd21b0010b5bab180ec89dfba370140 SHA-1: a86fbc742d280d9dac637d1796452bc028fd19e5 SHA-256: 48376e911dfa2fd1eefb3bb34face082f8179f2be469106b01da4448316a30e0
128 Risk Score

Malware Insights

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

The file is identified as malicious by multiple heuristics, including a critical ClamAV detection for 'Pdf.Exploit.Dropped-156969-1'. The PDF contains an embedded script payload and an embedded file, indicating it's designed to drop and execute further malware. The ML classifier also strongly flags this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • ClamAV: Pdf.Exploit.Dropped-156969-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-156969-1
  • Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • 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
embedded_file_obj0010.bin
dedaa48c3553574a4336c8d2c54fc0828791c409ea9ca40f6a39fa1466946ae1
pdf-embedded-file PDF EmbeddedFile object 10 at offset 0xC8A 6990 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 4 long base64-like blob(s).