Malicious PDF — malware analysis report

Static analysis result for SHA-256 482086c930562036…

MALICIOUS

PDF

42.6 KB
MD5: 7616d96aaa5e43209d36034c389ef7f9 SHA-1: b54e36d0f056556ff488c6eee09824f01ebac2c6 SHA-256: 482086c930562036a9ad78fc6d6837deec07fa158919eaa3fbd15a4fe7bb1677
196 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.007 JavaScript

The PDF file contains XFA forms with embedded executable scripts, as indicated by multiple high and critical heuristic firings including ClamAV detection for Pdf.Exploit.Agent-36830. The embedded script payload is designed to exploit vulnerabilities within the XFA form processing. No document body text was available for analysis, but the presence of embedded scripts and the ClamAV signature strongly suggest an exploit delivery mechanism.

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-36830 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36830
  • 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
8462d5427f5a3d5a0d8421086f4dd9a023b486270e19c928c280e18c5bfbb6c1		 pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x14D 683 bytes
embedded_file_obj0010.bin
982e20dbb278e7bb9167a49d41bca4eba40d0f35d12088fdf01e6cb6fead89b4		 pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x443 165 bytes
embedded_file_obj0011.bin
c0cf9ed96646c0d0507d908461e43ed930953fdb4385a62bce2c1916e15c985d		 pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x533 421 bytes
embedded_file_obj0012.bin
d2f06f3fc6900856fe613a64a561919c8454dcbe0fdf238fb8b43e07016955ea		 pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x723 190 bytes
embedded_file_obj0014.bin
d2d90f4b8ea99ef890d6ca7ae3854a9815de4541b9b0c89b74933c0d3a863772		 pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x82E 40741 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely
embedded_file_obj0015.bin
78b09463af5cd373870eae2e3e83de87b7f6b659e0d0117ab4c09d90ebb2ad95		 pdf-embedded-file PDF EmbeddedFile object 15 at offset 0xA79D 68 bytes

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