Malicious PDF — malware analysis report

Static analysis result for SHA-256 e62af93b6bfa21dc…

MALICIOUS

PDF

18.6 KB
MD5: 17912021c6a7666761c7bb62d7a84054 SHA-1: 47a785ff6886f6a85ba22c8d6361c067792213b2 SHA-256: e62af93b6bfa21dc74a74533c7f24d2a8a78aa773f2f371c29a180590fddff36
128 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Dropper.Agent-7317264-0' and an ML classifier indicating maliciousness with high confidence. An embedded script payload was also detected, suggesting the PDF's primary function is to download and execute a secondary stage. The presence of an embedded file further supports this dropper functionality.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Dropper.Agent-7317264-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7317264-0
  • 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_obj0029.bin
753481138a1815c2ce6ad33f11523ae8f86743229f0967138c25b8b57c3a0143
pdf-embedded-file PDF EmbeddedFile object 29 at offset 0x5C 24936 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).