Malicious PDF — malware analysis report

Static analysis result for SHA-256 e67e9f6a36894aa6…

MALICIOUS

PDF

76.2 KB
MD5: 120ffc20344e39d3965c41366a1bb59f SHA-1: b15addc9e5bd0532bded72160f3ead8c7c07d211 SHA-256: e67e9f6a36894aa61b60abc8c18372703f10d26fe1d9770b5eb136fac94e7017
196 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: Exploitation for Client Execution

This PDF file exploits the CVE-2010-0188 vulnerability in Adobe Reader's LibTIFF component. The heuristic firings indicate an XFA form with an embedded script payload, which is characteristic of exploit delivery. The embedded script likely downloads and executes a second-stage payload, although the script content was truncated and obfuscated, preventing a full analysis of its specific actions. The ClamAV detection further confirms its malicious nature.

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 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.Dropped-78 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
  • 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.
  • 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 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
3ae19f999e1bc2ad95125c57639bbc4f96b5066d24cb2dde77efa2bccb8b2365		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 77288 bytes

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