Malicious PDF — malware analysis report

Static analysis result for SHA-256 29439befb2e62429…

MALICIOUS

PDF

29.6 KB Created: 2012-12-11 17:01:31 Authoring application: pgvdttsdhcgam (via waymhnpjmjprfv)
MD5: 36d07b7df7197606ccbe03f4cb9fe721 SHA-1: fbb92363b33d4406858328390c9db83a68c20def SHA-256: 29439befb2e62429fe2630c2f155e0e8d925ae182fb042bb0085a39c4876b04b
78 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.001 JavaScript/JScript

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, which is likely the second-stage payload. This script is responsible for executing the exploit and potentially downloading further malicious content.

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.
  • 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 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
37b67a12770eabb5e6dbcd9a3cbcd1a90dc04bc5fec2a0def466072f65d037e1
deobfuscated-js XFA /Title hex-XOR decoded JavaScript (raw, key=vanrxtsLKSR) at offset 0x5353 4098 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).