Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d062e372ea5097f…

MALICIOUS

PDF

29.7 KB Created: 2012-12-11 17:01:31 Authoring application: pgvdttsdhcgam (via waymhnpjmjprfv)
MD5: 2874410555067de26de745b05a8d0ccb SHA-1: 36703edb8df9e47a4be47446a691fffa1c885e15 SHA-256: 8d062e372ea5097f0d2c4d6f0c5439f3fac99c2ca65ff5de7ea4df8b6ef58e19
138 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1059.001 PowerShell

The PDF file contains an embedded JavaScript file that exploits the CVE-2010-0188 vulnerability in Adobe Reader. This exploit is designed to download and execute a second-stage payload. The presence of XFA forms and embedded files further supports the malicious nature of this document.

Heuristics 5

  • 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.
  • ClamAV: Pdf.Dropper.Agent-7281128-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7281128-0
  • 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
d327e27dcdc6ecfa490f29fd78a2132525ed2a5037f0cce66fbe0244e3834c58
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).