Malicious PDF — malware analysis report

Static analysis result for SHA-256 179ecd365c49006e…

MALICIOUS

PDF

111.4 KB
MD5: d833ab6a5d7f55ae64f2fd8f65812fc6 SHA-1: 740d2bde3ef5fc84410c2039b6d0a4308c8d14cf SHA-256: 179ecd365c49006e6bcdc8dc344922c43a1ee9a99cf3aaaa63ad6f2c81d9e3a9
228 Risk Score

Malware Insights

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

The PDF file contains an embedded XFA form that exploits the CVE-2010-0188 vulnerability in Adobe Reader. This exploit likely leads to the execution of the embedded JavaScript, which is heavily obfuscated but detected by ClamAV as Js.Exploit.HTML-27. The script's purpose is to download and execute a second-stage payload, as indicated by the embedded script payload heuristic and the ClamAV detection on the extracted artifact.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • 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.
  • 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_pdf_script_00000238.bin
9b182dcc11b21a3676501a0d5c4dc11bbe78b33fe47333f5a74adf68fd8e05ad		 pdf-embedded-script PDF raw stream script payload at offset 0x238 113389 bytes
Detection
ClamAV: Js.Exploit.HTML-27
Obfuscation or payload: unlikely

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