C6 Messenger Downloader — PDF malware analysis

Static analysis result for SHA-256 2e56203d92a56a4b…

MALICIOUS

PDF

56.8 KB Created: 2011-04-28 10:02:58 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))
MD5: 9ab5c25e60105dcc267cbb41242b1b25 SHA-1: 2903b73decf9986ff65203777fc5edc9febc50e4 SHA-256: 2e56203d92a56a4be898d5d1528babc5a6d84271354a217d6403e58fadbe1a0c
62 Risk Score

Malware Insights

C6 Messenger Downloader · confidence 85%

MITRE ATT&CK
T1204.002 Malicious File T1059.001 PowerShell

The sample is a PDF file that triggers the CVE-2008-2551 vulnerability, identified by the 'C6 Messenger DownloaderActiveX exploit' heuristic. This exploit is known to download and execute a second-stage payload. The embedded URL 'http://artisanballoonz.com/system/system.exe' is highly suspicious and likely the location of this payload. The PDF also contains numerous benign URLs, likely for obfuscation.

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://www.irna.ir/View/FullStory/?NewsId=1039388
    • http://www.farsnews.com/newstext.php?nn=8901171116
    • http://www.farsnews.com/newstext.php?nn=8901171312
    • http://www.mehrnews.com/fa/newsdetail.aspx?NewsID=1058406
    • http://www.farsnews.com/newstext.php?nn=8901171386
    • http://www.presstv.ir/Persian.aspx?id=8997
    • http://www.presstv.ir/Persian.aspx?id=8989
    • http://www.presstv.ir/Persian.aspx?id=8993
    • 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_006_off00002449.bin
80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2449 73272 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.