Malicious PDF — malware analysis report

Static analysis result for SHA-256 f77f273c47949389…

MALICIOUS

PDF

21.6 KB Created: 2010-08-06 16:10:41 Authoring application: tubaEta sexOlds
MD5: 875450e9e9d16cc036326737b765d16b SHA-1: 982f4d5fe47d69fcec7e640d9dd84afd4406284f SHA-256: f77f273c4794938943b394d9845ef51c5b8bb686f0f4413a7c25af7372db808f
138 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File Execution: Malicious File Execution

The PDF sample contains critical XFA heap spray exploit code and risky executable script within its XFA form. This indicates the document is designed to exploit a vulnerability to execute a payload. The embedded file 'embedded_file_obj0010.bin' is likely the dropped payload. No specific family could be identified.

Heuristics 6

  • XFA form contains risky executable script high CVE related PDF_XFA_SCRIPT
    PDF embeds an XFA form whose script block contains exploit, submission/launch, or shell-execution primitives. Ordinary LiveCycle print/update scripts are left as generic XFA/JS signals unless stronger behavior is present.
  • XFA JavaScript heap-spray exploit code critical PDF_XFA_HEAP_SPRAY
    PDF contains XFA script content with heap-spray or shellcode-like JavaScript markers such as large encoded word sequences, util.pack, large arrays, or spray variable names. This is a weaponised Adobe Reader exploit pattern, not a normal interactive form.
  • Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • 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 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
d81baa73e490e4cb879e13927cacd1dd1be37524a37eac51603e15117c578777
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0x1921 84 bytes
embedded_file_obj0009.bin
24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0
pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x19D2 228 bytes
embedded_file_obj0010.bin
b6bf198840eabcca8af2478c101e88cee43012ee139857248b3f93ae3d2c90fa
pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x1AC5 28195 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 3 eval/decoder/string-building token(s).
embedded_file_obj0011.bin
c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460
pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x4DF9 199 bytes
embedded_file_obj0012.bin
e8eb7196a67a1d654f7bc1e8fc955cea125fbf4469d263408d7707161fdac6ff
pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x4EEB 131 bytes
embedded_file_obj0013.bin
e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876
pdf-embedded-file PDF EmbeddedFile object 13 at offset 0x4FAC 77 bytes
embedded_file_obj0014.bin
92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a
pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x5053 56 bytes