Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba238c40fe08e33c…

MALICIOUS

PDF

4.0 KB
MD5: 071dbc4f20544b72d656475650a2139c SHA-1: 4e6fc81063fc4b3d3e58880653b2dd066cefb567 SHA-256: ba238c40fe08e33c46f60353eb967371fa713cb623cf4c28365ea7c94fcb5a31
218 Risk Score

Malware Insights

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

The PDF file contains an embedded TIFF image that exploits CVE-2010-0188, a vulnerability in Adobe Reader's handling of XFA forms. This exploit allows for arbitrary code execution. The file was detected by ClamAV as Pdf.Exploit.Pidief-3, indicating a known malicious PDF exploit.

Heuristics 7

  • 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.
  • ClamAV: Pdf.Exploit.Pidief-3 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Pidief-3
  • 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.
  • ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX
    Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
  • 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_obj0001.bin
54cea11ac7c72722eee84ecfc89eeeb66a2e3524d04672abccd51741de5b249b
pdf-embedded-file PDF EmbeddedFile object 1 at offset 0x6C 13441 bytes
Detection
ClamAV: Pdf.Exploit.Pidief-3
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).