Malicious PDF — malware analysis report

Static analysis result for SHA-256 53cf68864abb216c…

MALICIOUS

PDF

497.9 KB
MD5: fe5035e34d575fe25fe24d10fc3b72ba SHA-1: c17b0c54d61dd3fb9002e3c9bd1bf06bb0f8ab75 SHA-256: 53cf68864abb216cfbc72e4d44228ef08dbad6e2f2b82ddc3350b2933e5c5140
80 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.001 PowerShell

The sample is a PDF document that contains an embedded file and triggers the CVE-2010-0188 exploit. This exploit targets a vulnerability in Adobe Reader's handling of LibTIFF XFA images, allowing for arbitrary code execution. The embedded file, named 'embedded_file_obj0001.bin', is likely the secondary payload. The XFA form structure and embedded nature of the exploit suggest a malicious document designed to compromise the user's system upon opening.

Heuristics 5

  • 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.
  • 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
5cef019c1335cf413c3b764f8bf6d3d305a45c6872e36866b22ef0163fce9c50
pdf-embedded-file PDF EmbeddedFile object 1 at offset 0x51 13430 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).