Malicious PDF — malware analysis report

Static analysis result for SHA-256 58e6412adf31c036…

MALICIOUS

PDF

18.6 KB
MD5: e492dd0aea12ad3cffe6679965cbc98a SHA-1: a89c493823d688e3f29461481fbf981c10c119d1 SHA-256: 58e6412adf31c036cc011e6f4da7090c12c02e27528d6680a3b9533b74073143
70 Risk Score

Malware Insights

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

The PDF file exhibits multiple indicators of maliciousness, including an embedded script payload and a high ML classifier score. The presence of an embedded file, specifically 'embedded_file_obj0051.bin', further suggests that this document is a delivery mechanism for additional malicious content. The embedded script is likely responsible for executing the payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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_obj0051.bin
aab5faa701cf78a9320a8f434a0bdfb83cfb265ea2c00f85554fcd5ab57b765e
pdf-embedded-file PDF EmbeddedFile object 51 at offset 0x5C 24936 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).