Malicious PDF — malware analysis report

Static analysis result for SHA-256 43ae3435decba085…

MALICIOUS

PDF

4.4 KB
MD5: d45016694c1ad0392403879c87046d5d SHA-1: 0961d48ad63ad52f86d28324c9006f9bdbd26c9d SHA-256: 43ae3435decba08507fed4132fd021b42ff17e9c355e024b34951dd2afed2480
98 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1059.001 Command and Scripting Interpreter: PowerShell T1203 Exploitation for Client Execution

The PDF file contains an XFA form and utilizes ASCIIHexDecode and ASCII85Decode filters, which are indicators of obfuscation. The critical heuristic firing for CVE-2010-0188 confirms that the file exploits a known vulnerability in Adobe Reader related to XFA image handling. This exploit is designed to download and execute a secondary payload. No specific malware family could be identified.

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
6d7686bfb904717c123943bb25f2ae15fb0e42451b41a2188eaf86426bffaffd
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).