Malicious PDF — malware analysis report

Static analysis result for SHA-256 277ff4173c992584…

MALICIOUS

PDF

5.8 KB Created: 2012-10-05 27:44:18 Authoring application: jkkia=bnwesa(nehet.replace(/cvhhse/g, iiioes.charAt(4
MD5: a81c1cd5b9c9aa1c47cfe35ed7ba33c7 SHA-1: cc24e5d3a2aefa2c29886387818954d6d4319fc4 SHA-256: 277ff4173c992584e3ba3dc644b8e3de9cbc3ab5b5f7fad22ddf541470276c8a
100 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.001 PowerShell

The sample is a PDF document that exploits CVE-2010-0188, a vulnerability in Adobe Reader related to XFA forms and LibTIFF. This exploit allows for arbitrary code execution. An embedded script payload was also detected, suggesting the document is designed to download and execute a second-stage payload.

Heuristics 6

  • Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188
    PDF contains the CVE-2010-0188 exploit template: XFA JavaScript heap-spray setup, a generated TIFF image payload, and assignment of that TIFF data to an XFA image field rawValue to trigger Adobe Reader's LibTIFF parser.
  • 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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0010.bin
c09ae753ce4962d3d447f6ccdc05236eb9238277b66775a82f085f0fd265a84d
pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x258 130 bytes
embedded_file_obj0019.bin
91fe19effc24e03328d1b65ba876b72b4bfbef268f92a70689f93acbf9e3e702
pdf-embedded-file PDF EmbeddedFile object 19 at offset 0x46E 57 bytes
embedded_file_obj0003.bin
e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876
pdf-embedded-file PDF EmbeddedFile object 3 at offset 0x50C 77 bytes
embedded_file_obj0014.bin
92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a
pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x5B6 56 bytes
embedded_file_obj0001.bin
d4d42ce0e2becf87abd24a70143a95b67bb3633a77c6bfce0204f49023ee7cd4
pdf-embedded-file PDF EmbeddedFile object 1 at offset 0x6BD 201 bytes
embedded_file_obj0002.bin
f6932cb98ff08ec23840652ae080293b08eb088d3a1af713d13b5d4356ffca19
pdf-embedded-file PDF EmbeddedFile object 2 at offset 0x9BC 35986 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).