Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7895bec5a108de8…

MALICIOUS

PDF

79.0 KB
MD5: cdb02fc3ec7f3598cb0c23af4d1a9b94 SHA-1: 88877c0bc3f79700e1ff3e5529aac9d893ca0e0f SHA-256: c7895bec5a108de8138ce17e987845a2a74b1f9c10a995cebb695d73d72749ce
136 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.001 PowerShell

The PDF file contains embedded XFA forms and scripts, triggering heuristics for CVE-2010-0188, an Adobe Reader exploit. The embedded script payload is likely responsible for downloading and executing a second-stage payload, although the script content itself was truncated and obfuscated, preventing a full analysis of its actions. The presence of the CVE-2010-0188 exploit indicates a targeted attack aimed at exploiting a known vulnerability in PDF readers.

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
876283819f57fe84435212544ede35bca4d989e0fc229162d044dfb58a5f929e		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 80102 bytes

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