Malicious PDF — malware analysis report

Static analysis result for SHA-256 b79aa17e881aced1…

MALICIOUS

PDF

42.7 KB
MD5: a7d3b837be18e63d39846da7d3d2b953 SHA-1: 0e5c1904a9401ac9a717b554887cbe144e8da3b9 SHA-256: b79aa17e881aced12972bcc1bc97bddc5c3123e0a7ca7d791b09f74b5509d7fb
226 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File T1059 Command and Scripting Interpreter

The PDF file contains embedded executable scripts and is flagged by multiple heuristics, including critical ClamAV detections for 'Pdf.Exploit.Agent-36836'. The presence of XFA forms with risky executable scripts indicates an attempt to exploit PDF viewer vulnerabilities to deliver a malicious payload. The embedded artifacts and script content strongly suggest this is a malicious document designed for exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • XFA form contains risky executable script high CVE related PDF_XFA_SCRIPT
    PDF embeds an XFA form whose script block contains exploit, submission/launch, or shell-execution primitives. Ordinary LiveCycle print/update scripts are left as generic XFA/JS signals unless stronger behavior is present.
  • ClamAV: Pdf.Exploit.Agent-36836 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36836
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • 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/xci/1.0/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/
    • http://ns.adobe.com/xfdf/
    • http://www.xfa.org/schema/xfa-form/2.8/

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
0a2224c4023b216235b61c3fc4dd17bbfac1ab23a545687f51b97604cf654712		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xD7 46 bytes
embedded_file_obj0009.bin
1ab6f2064528b6fcf5e617315d34b5b4f5bd58d8eb12ef9d27129ad9f0dc72db		 pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x14D 688 bytes
embedded_file_obj0010.bin
50e52033eae7706a575698d3f5a6d0bf05a5f6e75efd829e6ddba4bc9dfb8167		 pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x448 139 bytes
embedded_file_obj0011.bin
f92fee656eae93be97fa25c8edfb35aca76076bf90ab5ede140aa44688413f1f		 pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x51E 354 bytes
embedded_file_obj0012.bin
d2f06f3fc6900856fe613a64a561919c8454dcbe0fdf238fb8b43e07016955ea		 pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x6CB 190 bytes
embedded_file_obj0014.bin
e30720bb6592c3964a2b65fa982b56719231c37cc51c733157320e27b534d466		 pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x7D6 40949 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36836
Obfuscation or payload: unlikely
embedded_file_obj0015.bin
78b09463af5cd373870eae2e3e83de87b7f6b659e0d0117ab4c09d90ebb2ad95		 pdf-embedded-file PDF EmbeddedFile object 15 at offset 0xA815 68 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.