Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a360fd6b9b138bb…

MALICIOUS

PDF

11.8 KB
MD5: 7b7891c0c9aff413a8348358c5484640 SHA-1: 8082f35969f9c14d122ba140c5ea6e41e87304e2 SHA-256: 5a360fd6b9b138bba814fecb3c090811a5420f1bb64c219ec966c10523d07774
116 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript

The file is identified as malicious by ClamAV with the signature Pdf.Exploit.Dropped-78, and a high-confidence ML classifier. It contains an embedded script payload within a PDF stream, indicating an attempt to execute arbitrary code. The XFA form suggests a potential for JavaScript execution, which is commonly used to download and run further malicious content.

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
8231943a427cff36035733be7ca8ef22cacdcf86fc4c5534ff24c322dc1a56fa
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 11327 bytes