Malicious PDF — malware analysis report

Static analysis result for SHA-256 016104a82e67c3ca…

MALICIOUS

PDF

111.4 KB
MD5: 1e4c6f71411b36cdbd0fe241cc6edb89 SHA-1: 24222448bb7a426d789410f1177cfdbeece5ed7d SHA-256: 016104a82e67c3ca106bb91b0539c03fb1baafe1bdffc29cefdb10d502b9db67
240 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious File T1059.007 JavaScript T1566.001 Spearphishing Attachment T1566 Phishing

The PDF file contains an XFA form that exploits CVE-2010-0188 in Adobe Reader. An embedded JavaScript payload is present, which is flagged by ClamAV as Js.Exploit.HTML-27. The ML classifier and other heuristics strongly indicate malicious intent, likely to download and execute a second-stage payload.

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.
  • 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.
  • 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/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
8e3cf1af6c65ff1ea7a6b4ce5b41804db775554c12077df14a1aeaa3702c2482		 pdf-embedded-script PDF raw stream script payload at offset 0x238 113397 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.