Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b68d986d36a8615…

MALICIOUS

PDF

31.8 KB
MD5: b79c8acddd87dafdb1989b4213449c9d SHA-1: cb71267809f7682fc88cca9746c6f5f628c07f80 SHA-256: 6b68d986d36a8615db87482bd080b766ecc9fc719bc21cd0b0f1768e30b99757
276 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF document contains an embedded Adobe Flash RichMedia object that exploits CVE-2010-1297. This exploit is designed to execute shellcode, which is present within the decompressed SWF stream. Additionally, embedded JavaScript was extracted, which likely contributes to the exploitation process.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9945

Heuristics 8

  • Adobe Flash authplay SWF exploit in PDF — CVE-2010-1297 critical CVE likely CVE_2010_1297_FLASH_RICHMEDIA
    PDF combines RichMedia Flash activation, a crafted SWF with ActionScript prototype/AVM-era markers or the AES-PHP/authplay variant markers, and PDF-side shellcode heap-spray staging. This is the static delivery shape associated with CVE-2010-1297 in Adobe Reader's bundled authplay.dll.
  • ClamAV: Pdf.Exploit.Agent-35955 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-35955
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • RichMedia (Flash) high PDF_RICHMEDIA
    PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
WPCgDXkVO.swf
c2b666a3ef4c191b77b78c037656e50477b8ba3d35fd61ae843a3a1f4d41c5c1
pdf-embedded-file PDF EmbeddedFile object 16 at offset 0x14F2 26774 bytes
Detection
ClamAV: Pdf.Exploit.Agent-35955
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
javascript_obj0006_000.js
033a97c0d220296cfb7f3d9afc93554e11374bb856207ce93e36039044c3ed07
pdf-javascript-stream PDF /JS object 6 at offset 0x140 3630 bytes