Malicious PDF — malware analysis report

Static analysis result for SHA-256 89c0a5499c1833db…

MALICIOUS

PDF

3.8 KB Authoring application: rxode (via va)
MD5: 009323739bfc05423ff82dc42d84f3ad SHA-1: 0a9b3993f290f148ac6aae99562b270e93f7081c SHA-256: 89c0a5499c1833dbcee06c7c21703ade753a3ce3fca8a3d3ef2b58133287701c
98 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment T1204 User Execution

The PDF file contains an embedded XFA form that triggers the CVE-2010-0188 exploit in Adobe Reader. This exploit is known to allow arbitrary code execution. The embedded file 'embedded_file_obj0041.bin' is likely the secondary payload. The exploit allows for the execution of arbitrary code, which is a common first step in delivering further malware.

Heuristics 5

  • 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.
  • 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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0041.bin
59108ed8c4b0b56c1bb5ced4f3d6b3ea68f8da65d0f3b16541d6ee06a5e1fc9d
pdf-embedded-file PDF EmbeddedFile object 41 at offset 0x53 9807 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).