Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2261472aef07c1c…

MALICIOUS

PDF

18.8 KB
MD5: 53f6526b5cece04447ccc8c2caf222d5 SHA-1: f2a7331632f35d0742266100a18d81544a2ff6bb SHA-256: b2261472aef07c1c18d63e8d93801c94006240e05c8f80202d2440bab5758ea7
96 Risk Score

Malware Insights

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

The PDF file contains embedded script content and is flagged by ClamAV as Pdf.Exploit.Dropped-78, indicating it is designed to exploit vulnerabilities. The presence of an embedded file further supports the delivery of a malicious payload. The exact nature of the exploit is not fully detailed due to obfuscation, but the overall pattern suggests a malicious PDF designed to drop and execute further malware.

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
61fcc96ea2376ae72c26dfd184203bdd6e74141eafacaf6d2f296eebda4d26fb
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 18503 bytes