Malicious PDF — malware analysis report

Static analysis result for SHA-256 a71b939746ec0abe…

MALICIOUS

PDF

2.6 KB
MD5: 4fd3f0c7e3463c23029ec35aec855d54 SHA-1: a07bb3c57a5f8a61b87cd0e4b5c8bdc11f7094a0 SHA-256: a71b939746ec0abefb852381ccdbb0ee34457112b6756d8783ee450f46476fb1
138 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.002 Spearphishing Attachment

The PDF file contains an embedded XFA form that triggers the CVE-2010-0188 exploit in Adobe Reader. This exploit is designed to download and execute a secondary payload, as indicated by the ClamAV detection 'Pdf.Exploit.Dropped-90' and the presence of a suspicious embedded binary artifact. The exploit targets a known vulnerability in the handling of TIFF images within XFA forms.

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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0001.bin
7e8938445653c787e58f46c911b151e39e112342412023b12c21d75c1b71e685
pdf-embedded-file PDF EmbeddedFile object 1 at offset 0x5D 13415 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).