Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4aed6fd8b91b4aa…

MALICIOUS

PDF

11.6 KB
MD5: 49aa57c681f775f738cda3fcba89dce5 SHA-1: 75642aa432531b261a542f9f539d914e1f96dc62 SHA-256: e4aed6fd8b91b4aaf3649d3fbb9086187e856044372b2e577995ebbb47679980
96 Risk Score

Malware Insights

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

The critical ClamAV heuristic 'Pdf.Exploit.Dropped-78' strongly indicates this PDF is malicious and likely exploits a known vulnerability. The presence of an embedded script payload further supports this, suggesting it's designed to download and execute a second-stage payload. While specific IOCs beyond the file hash are limited, the embedded nature and exploit detection point to a common malware delivery technique.

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
30d7b1bcaa2a3caae4bbdd5ed318077155eed2bc876b7ad1edb4314f417db280
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11157 bytes