Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e40edcb3a6942d4…

MALICIOUS

PDF

4.4 KB
MD5: a990342637c5d0336cca70cab5d0583c SHA-1: ae9d27910ed26ad15dcf17afc074fccd230cca66 SHA-256: 1e40edcb3a6942d4a24791ccd0a4fdb23fc407ab223339364b3119d453760b2a
98 Risk Score

Malware Insights

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

The PDF file contains an XFA form and triggers a critical heuristic for CVE-2010-0188, indicating exploitation of a vulnerability in Adobe Reader's LibTIFF component. The presence of ASCIIHexDecode and ASCII85Decode filters further supports the exploit. The extracted artifact 'stream_000_off00000207.bin' is likely the exploit payload. The attack pattern is consistent with a document-based exploit designed to achieve arbitrary code execution.

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.
  • 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
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • ASCII85Decode filter (with exploit indicators) low PDF_FILTER_85
    ASCII85 encoding filter present alongside exploit delivery indicators — uncommon outside of obfuscation
  • 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
stream_000_off00000207.bin
9068c88818c8eb0ef13dbea17b0ecb50e0acd1cfa95e5a8a21543fc1ffdb87d1
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x207 13469 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).