Malicious PDF — malware analysis report

Static analysis result for SHA-256 15c9ef29d8dd0a7c…

MALICIOUS

PDF

1.9 KB First seen: 2026-05-10
MD5: 4382f6a42f61cde028dff3c6964eed70 SHA-1: 831f72ee473b940bd90731112f5e0edd7ef1aa66 SHA-256: 15c9ef29d8dd0a7c8d81a012d6d8fcf7ceca5e65111e8f2cd5efe42c03741ad2
146 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF sample contains an embedded file and triggers heuristics related to XFA forms and exploits. ClamAV detection specifically identifies it as exploiting CVE-2010-0188, a known vulnerability in Adobe Reader. This suggests the primary attack pattern is exploitation for client execution, likely delivered via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • Suspicious extracted artifact high 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.
  • 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0002.bin pdf-embedded-file PDF EmbeddedFile object 2 at offset 0x91 11556 bytes
SHA-256: fc0f755774a7154ba1ba015003f1282b33f2681a9674b9c745009526fd2d03aa
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).
xfa_image_rawvalue_000.tif pdf-xfa-image-tiff XFA image/rawValue TIFF payload near offset 0x9F 8642 bytes
SHA-256: c7aeef41759b10f172052719a6efb1215f07eb56b2816947525f347b8b0a181b
Detection
ClamAV: Win.Exploit.CVE_2010_0188-7
Obfuscation or payload: likely
Static shellcode analysis found candidate code region(s). Indicators: NOP sled, SC_PEB_ACCESS, SC_STR_CMD Static shellcode analysis recovered command string(s): cmd.exe /c c:\a.pdf