Malicious PDF — malware analysis report

Static analysis result for SHA-256 b01093d37297079a…

MALICIOUS

PDF

11.6 KB
MD5: c5a412e5e31f1ead648a7a8714fe4e4a SHA-1: 7f64cff12f08b5e22e702cad4d17a572fb01e753 SHA-256: b01093d37297079aba5faa4f41cd4ab66fe260b881737ba6097686e63daab128
128 Risk Score

Malware Insights

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

The PDF sample was flagged by multiple heuristics, including ML classification and ClamAV, indicating malicious intent. The presence of an embedded file and script payload strongly suggests the document is designed to exploit a vulnerability and deliver a secondary malicious artifact. The embedded file 'embedded_file_obj0008.bin' is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
  • 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.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
c7093b19b05247e93013fcdc32b9cc999acda1c8723b4df5194a9e3ff8de097f
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11166 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).