Malicious PDF — malware analysis report

Static analysis result for SHA-256 099bdadab5c8bd8e…

MALICIOUS

PDF

19.1 KB
MD5: aecfd942fb30fe009752449afd86eb71 SHA-1: 964be9be103fcdf3ecd28bcd2f426609b66d6c78 SHA-256: 099bdadab5c8bd8e4008e638fe5f7e0413eafb02d37395b712ef7197999c785a
116 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by multiple engines, including ClamAV which identified it as Pdf.Exploit.Dropped-78. The presence of an embedded script payload and an embedded file suggests the document is designed to exploit vulnerabilities and deliver a secondary malicious payload. The benign URLs present are likely unrelated to the malicious functionality.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
  • 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
  • Embedded script payload in PDF stream low 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 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
7547491f8955c3c107f0f42a23535d801acf0ab51b48e5a5a5f8d23551845c8a
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 18762 bytes