Malicious PDF — malware analysis report

Static analysis result for SHA-256 4541917ec2ab2c7e…

MALICIOUS

PDF

5.4 KB Created: sdtres
MD5: f5030bdf634513c05ac0661266d60aec SHA-1: ea76bb768ad844317b959578cd45751b1c4ee9a7 SHA-256: 4541917ec2ab2c7e14fcf84489354a119bb86006409fa1eb5ada8985b3c23d16
216 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF file contains an embedded script payload and triggers a critical heuristic for CVE-2010-0188, indicating it exploits a vulnerability in Adobe Reader's LibTIFF component. This exploit allows for arbitrary code execution, likely to download and run a second-stage payload. The embedded artifact and ClamAV detections further confirm its malicious nature.

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.
  • ClamAV: Pdf.Exploit.CVE_2010_0188-10 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.CVE_2010_0188-10
  • 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.
  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0011.bin
0151316a9b5985e386eed1edcd24d87f0299d3b60768149f905042160c11f129
pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x435 32684 bytes
Detection
ClamAV: Pdf.Exploit.CVE_2010_0188-10
Obfuscation or payload: unlikely