Malicious PDF — malware analysis report

Static analysis result for SHA-256 58e81a464b2ee9a5…

MALICIOUS

PDF

19.0 KB
MD5: 834b7e4d902d64aaedd572e05fe3406b SHA-1: 54739bfb2ba44a5b5f4a7332fb26497e4110cb6a SHA-256: 58e81a464b2ee9a5b1c4a364227e5b825e033beddedb4102f9690023990bbad4
96 Risk Score

Malware Insights

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

The critical ClamAV detection 'Pdf.Exploit.Dropped-78' strongly indicates this PDF contains an exploit. The presence of an embedded script payload and an embedded file further supports this, suggesting the PDF is designed to drop and execute a secondary malicious payload. The document body content is not user-readable and appears to be obfuscated or malformed, providing no direct clues about the lure.

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
75d6c5166d17ea9d8157c46fb00b8326a866af2f625b22bfa74d361372f8540f
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 18686 bytes