Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e53546b160085f6…

MALICIOUS

PDF

42.7 KB
MD5: 24544ee8b88ef9fcb7095d01042f0a2f SHA-1: 195bf2e5d3c6d3ddb139068f8a9b191c1983517d SHA-256: 0e53546b160085f647b28627f200b95883c90bcd1ad7a7f945cc597db361b003
216 Risk Score

Malware Insights

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

The PDF file contains XFA forms with executable scripts, a known vector for exploiting client-side vulnerabilities. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically targeting PDF viewers. The embedded script is likely designed to download and execute a second-stage payload, as indicated by the 'Pdf.Exploit.Agent-36830' ClamAV signature.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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
  • 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/ In PDF document text
    • http://www.xfa.org/schema/xci/1.0/In PDF document text
    • http://www.xfa.org/schema/xfa-template/2.5/In PDF document text
    • http://www.xfa.org/schema/xfa-data/1.0/In PDF document text
    • http://ns.adobe.com/xfdf/In PDF document text
    • http://www.xfa.org/schema/xfa-form/2.8/In PDF document text

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
7580095c8d5aa5a26abd277f752a2cf41d55fbb137ed9208eca08348c58e3be5		 pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x14D 685 bytes
embedded_file_obj0010.bin
97314d9231379623057a8a77eeb79f9354bacffa50753a0f63b9e87e8d67dbf2		 pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x445 186 bytes
embedded_file_obj0011.bin
ea0aae81663851afd6afe8cd5dca82adf893dc77929afd3250710d2de8024ccc		 pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x54A 381 bytes
embedded_file_obj0012.bin
d2f06f3fc6900856fe613a64a561919c8454dcbe0fdf238fb8b43e07016955ea		 pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x712 190 bytes
embedded_file_obj0014.bin
f325f1f44e0ab3f2c197cc12d561f7194bc9a134635a1f20659fdfaeabe7273a		 pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x81D 40899 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 0xA82A 68 bytes

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