Malicious PDF — malware analysis report

Static analysis result for SHA-256 27b15634aaf28989…

MALICIOUS

PDF

11.7 KB
MD5: 65e7ff415e9d4872cc328c9aea8f5432 SHA-1: 56d1004302a0a288dacc7ec73abf2825025c306e SHA-256: 27b15634aaf28989a4dd120c7421460f79d3a72844e8f9d23bdf0ff2be34ef4e
96 Risk Score

Malware Insights

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

The critical ClamAV detection 'Pdf.Exploit.Dropped-78' strongly indicates a malicious PDF exploit. The presence of an embedded script payload further supports this, suggesting the PDF is designed to download and execute a secondary malicious payload. The embedded URLs are benign or unknown, and the document body is not human-readable, leaving the exploit and embedded script as the primary indicators.

Heuristics 5

  • 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
  • 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
0e65b8d93b20bd217aa1d71f4810e7e2231661aec7df6a14a6da9531c9e0d917
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11212 bytes