Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3f94f39dd142dcf…

MALICIOUS

PDF

2.6 KB
MD5: 9304e9c2acdf9585aa18e2bab476d3d9 SHA-1: 1391e53fc58b9d1bdb28d2516a6fdc6f124139f6 SHA-256: f3f94f39dd142dcf3bcd572bbe1aa3985fad90c4077b5222ba483a3635c3a88d
138 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment

The PDF file contains an embedded XFA form that triggers the CVE-2010-0188 exploit in Adobe Reader. This exploit is known to deliver a second-stage payload, indicated by the 'Pdf.Exploit.Dropped-90' ClamAV detection and the suspicious embedded file artifact. The attack pattern involves luring a user to open a malicious PDF which then exploits a known vulnerability to execute arbitrary code.

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
4408b025d0136a3c865abbdc7f34aa693fbe16ae3466ff82e43086405d1394b2
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).