Malicious PDF — malware analysis report

Static analysis result for SHA-256 f530fbae01894d52…

MALICIOUS

PDF

7.5 KB Created: 2012-09-08 15:13:21
MD5: 010a9167318c0f68e51c52273b73c1de SHA-1: 0df753325ee3e8cc83f8a6ffa70217fdc668da88 SHA-256: f530fbae01894d52dceeb464c44866611365e90f76a93e6b0e630c7e00d2fb31
68 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File T1204.002 Malicious File: User Execution: Malicious Attachment T1059 Command and Scripting Interpreter T1059.001 Command and Scripting Interpreter: PowerShell

The PDF sample was flagged by a machine learning classifier as malicious with a high confidence score. Heuristics indicate the presence of an embedded script payload within a PDF stream, suggesting an attempt to exploit vulnerabilities or deliver a secondary payload. The embedded file 'embedded_file_obj0007.bin' is likely the malicious artifact.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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_obj0007.bin
ed6960cc5cb284af2e21d3827605385c22de9be7984e3e7ecf62a455e888053e
pdf-embedded-file PDF EmbeddedFile object 7 at offset 0xC1D 6985 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 4 long base64-like blob(s).