Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0e4bfda0697fbb5…

MALICIOUS

PDF

16.0 KB
MD5: 0ae691c75dd2fc147a3f62d48394b69c SHA-1: 2ed7c81b4388748d6cb5931462f2f6f1d73f898e SHA-256: f0e4bfda0697fbb521a6cb01cd102daa5e5ffd5be96abeac94f1fc5edac834fb
188 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment T1204 User Execution

The sample is a PDF document that leverages an XFA form to exploit CVE-2010-0188 in Adobe Reader. This exploit is designed to execute embedded script payloads, which are present in the document. The embedded script is likely responsible for downloading and executing a second-stage payload, as indicated by the critical heuristic firings and the presence of an embedded script.

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.
  • XFA form contains executable script high CVE related PDF_XFA_SCRIPT
    PDF embeds an XFA form whose dataset contains a <script> or <xfa:script> block — XFA scripting has been the exploit primitive for several Adobe Reader RCEs (CVE-2010-0188 family, CVE-2018-4901, and others). Plain XFA without scripts is far less risky.
  • ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • 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://www.xfa.org/schema/xfa-template/2.5/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_0000034e.bin
579efcfe54eb8254fc24440bd93cc37e9f1724662920a8695bf227600d9b4fa9		 pdf-embedded-script PDF raw stream script payload at offset 0x34E 15669 bytes

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