Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f183780a2019882…

MALICIOUS

PDF

2.6 KB
MD5: cc0fec769e83af6cf70631fd62b1ba18 SHA-1: 5dae808177a111b193f5dfbc9a37f1143a4c4da0 SHA-256: 1f183780a201988280db0a914383dc5841170f46c1fc47a2995205e94a176e68
138 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.001 PowerShell

The PDF file contains an embedded XFA form that exploits CVE-2010-0188 in Adobe Reader. This exploit is designed to download and execute a second-stage payload. The deobfuscated JavaScript, 'acroform_b64_00.js', likely facilitates this payload delivery, although its exact function is obscured. The ClamAV detection 'Pdf.Exploit.Dropped-90' further confirms the malicious nature of the file.

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.
  • ClamAV: Pdf.Exploit.Dropped-90 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-90
  • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0001.bin
b0062e97b0e7d4a06791b9934863baa400bd4ada9bd020755a6e8a135aeaf23d
pdf-embedded-file PDF EmbeddedFile object 1 at offset 0x5D 13473 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).
acroform_b64_00.js
0544336e64cb383710bdd623671947f37b59e1c91367ef69bd18066d1fa5908c
deobfuscated-js PDF AcroForm base64 (decompressed) at offset 0x58A 8730 bytes