Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0c095119ab1c720…

MALICIOUS

PDF

29.7 KB Created: 2012-12-11 17:01:31 Authoring application: pgvdttsdhcgam (via waymhnpjmjprfv)
MD5: 4e0bae727ed1296f29100f27f4c2789b SHA-1: ded6eb7a6690b3956e8f4a2ddfc6652adfc0be4c SHA-256: a0c095119ab1c7200cec21c9b788ab1dfc71b9b121bba0fa5e43dc96c2e659d2
116 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1059.001 PowerShell

The PDF file contains a critical heuristic indicating exploitation of CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. The analysis also identified embedded JavaScript within an XFA form, which is likely used to download and execute a secondary payload. The presence of an extracted JavaScript file further supports this, suggesting a multi-stage attack. The exact nature of the payload is not discernible from the provided evidence.

Heuristics 4

  • 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.
  • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0010.bin
f5fada8101d0364117b2454492c05b64911df9d040cddf613d50212da6228859
pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x12A2 10740 bytes
stream_011_off000041c0.bin
392d4f07be91edcc9359ef94bc01fc8fbd40fa048af13b58bb9eb28874772ed6
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x41C0 209 bytes
xfa_metadata_stage_000.js
03c62482852ae2cb28a8d15d4713e081b1d91dc8f62c4b593d6fde5b8a0b00d3
deobfuscated-js XFA /Title hex-XOR decoded JavaScript (raw, key=vanrxtsLKSR) at offset 0x5353 4130 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 6 eval/decoder/string-building token(s). Carved artifact contains 3 long base64-like blob(s).