Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a864b15784a8011…

MALICIOUS

PDF

76.0 KB
MD5: 12ba5f001f8333db9d360e9cb1bbdacf SHA-1: b0f188aefff9d7869a6499566e10037c23f6b26b SHA-256: 1a864b15784a80119aa3c262f79a8611cb5649dbfaea29ab767177980d7e2ddd
78 Risk Score

Malware Insights

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

The PDF file contains an embedded exploit targeting CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. This indicates the document is designed to be malicious upon opening in a vulnerable application. The embedded file and XFA form heuristics further support this conclusion. The exploit likely leads to the execution of a secondary payload, though no specific details of that payload were extracted.

Heuristics 4

  • Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188
    PDF contains XFA image data with an inline crafted TIFF payload and shellcode/delivery markers. This is the data-bound variant of the CVE-2010-0188 Adobe Reader LibTIFF/XFA exploit shape.
  • 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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PSSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0001.bin
4039e9c998334ff031d82f5ca110045c516b3c5ea8785535b9ad33d41166a47b
pdf-embedded-file PDF EmbeddedFile object 1 at offset 0x4F 13560 bytes