Malicious PDF — malware analysis report

Static analysis result for SHA-256 22a3bbb4fea70a97…

MALICIOUS

PDF

79.3 KB
MD5: e036a4b7577eacefbe9e8b1b611a122f SHA-1: 30bf1cf123e46eee5fb2205a71461869f253a9f9 SHA-256: 22a3bbb4fea70a972325c78f394618570695e494faa2fb7be3ac29bd0baacaff
198 Risk Score

Malware Insights

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

This PDF document exploits the CVE-2010-0188 vulnerability in Adobe Reader, specifically targeting XFA forms. The embedded script payload within the XFA form is designed to execute arbitrary code, likely leading to the download and execution of a second-stage payload. 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.Malware.Agent-9991505-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Malware.Agent-9991505-0
  • 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.
  • 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
da7f86fc637d73334b83d38854dc7db1dcdfc30642c7ee63f1ec57d9acf5c9a3		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 80494 bytes

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