Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c72b9e3dfec1108…

MALICIOUS

PDF

419.0 KB Created: 2011-04-27 03:27:23 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))
MD5: afc12cfe492d7d1057df1e0dd15280e8 SHA-1: 7ffc0126147561a24bf1128a3e8989bcc0db0979 SHA-256: 1c72b9e3dfec11081a08dfd9686d02c8f1cada9d02ee6e0acf4f2f78dfe3b98a
60 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File

The PDF file contains a marker indicating the CVE-2008-2551 exploit, which is known to download and execute secondary payloads. The embedded URL http://artisanballoonz.com/system/system.exe is highly suspicious and likely hosts the secondary payload. The document body was unreadable, but the exploit and URL strongly suggest a downloader attack pattern.

Heuristics 2

  • C6 Messenger DownloaderActiveX exploit critical CVE exact CVE_2008_2551
    PDF stream bytes contain HTML/ActiveX content configuring the vulnerable C6 Messenger DownloaderActiveX control with propDownloadUrl and propPostDownloadAction=run. This is the published exploit shape for CVE-2008-2551.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://artisanballoonz.com/system/system.exe
    • http://c6.community.alice.it/download/DownloaderActiveX.cab#Version=1,0,0,1

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000006e5.bin
80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x6E5 73272 bytes