Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f315865f85a27a6…

MALICIOUS

PDF

50.7 KB
MD5: 99fb84d136d0f5a19c247646ab517d77 SHA-1: 6efbf912482f46c4ea4ec790a2d5c2f3649ae9e1 SHA-256: 6f315865f85a27a6479e58710b326bc438ffd50afef47747528c1bff5d72a31b
216 Risk Score

Malware Insights

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

The PDF sample contains an XFA form which is known to be vulnerable to CVE-2010-0188, an exploit targeting Adobe Reader. The heuristic firings indicate that the exploit payload was decoded from a raw stream within the XFA form. This exploit likely facilitates the execution of arbitrary code, potentially to download and run a secondary payload, as suggested by the embedded script payload firing. ClamAV also detected this as Pdf.Exploit.Agent-6136306-0.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188
    PDF contains the CVE-2010-0188 exploit template: XFA JavaScript heap-spray setup, a generated TIFF image payload, and assignment of that TIFF data to an XFA image field rawValue to trigger Adobe Reader's LibTIFF parser.
  • 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-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • 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
a1ff23a7ec4a467a56baf3c5bbf0e275106312ecfc9c9f209ec6016e816d0af4		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 51175 bytes

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