Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6d0aea9a113f743…

MALICIOUS

PDF

59.3 KB
MD5: 97efb7c76ca95bca8f194cd623d93822 SHA-1: 1b9aa48e129133247cabdb8c90a2fb559acd7d1a SHA-256: f6d0aea9a113f743ce587112a8875ceb6f250f75f9da4f3b1a0f90d42e46f192
298 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

This PDF file exploits CVE-2010-0188, a vulnerability in Adobe Reader related to XFA forms. The heuristic firings indicate the presence of an embedded script payload within an XFA form, which is designed to be executed by the vulnerable reader. The embedded artifact 'embedded_file_obj0008.bin' is likely the second-stage payload. The benign reputation of the Adobe URL and unknown reputation of the XFA URLs suggest they are not directly involved in malicious C2 communication.

Heuristics 10

  • 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-36830 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36830
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • eval() call high PDF_EVAL
    eval() found — commonly used for obfuscated exploit execution
  • 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
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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
6314140ecfb5470ebe0bf4d73617fcc34e40b2d3d3ac05e3d8c820d81d51330d		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 59962 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s).

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