Malicious PDF — malware analysis report

Static analysis result for SHA-256 89f7ac3f0364bd77…

MALICIOUS

PDF

99.6 KB
MD5: c675aed60b55af8b16bc156f13a4cf00 SHA-1: a4ae2034b7167173de2e69bfc7ff338f939e901e SHA-256: 89f7ac3f0364bd77753698413e0bc58104e00a3d7054b953cca6faf1998d1381
136 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution

This PDF file exploits CVE-2010-0188, a vulnerability in Adobe Reader related to LibTIFF XFA image parsing. The heuristic firings indicate the presence of an embedded script payload within an XFA form, which is characteristic of exploit delivery. The script likely attempts to download and execute a second-stage payload, although the exact mechanism is obscured by the XFA structure. The embedded URLs are related to XFA schemas and Adobe, but their specific role in the exploit chain is unclear.

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.
  • 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
f18ce0a72a76388d53a5bda5d3092868746196b37dd41950e06eda6d7f98ecdf		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101198 bytes

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