Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bd3bef8c39756b8…

MALICIOUS

PDF

49.4 KB Created: 2011-05-29 16:16:41 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))
MD5: 19d26068d6510d1a1553876d3b31f0fd SHA-1: c965893158ea8db7a7e627439c526d7e3aa936e2 SHA-256: 4bd3bef8c39756b8c70b53a0a88ca0b0fa0bc352339efb711280e3910a60af7a
60 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File

The PDF file contains a critical heuristic indicating the presence of the CVE-2008-2551 exploit, which is known to download and execute arbitrary files. An embedded URL points to a potential second-stage executable, 'system.exe', on 'artisanballoonz.com'. While another embedded URL was flagged as benign, the presence of the exploit and the unknown reputation of the second URL strongly suggest a malicious download and execution attempt.

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_001_off00000723.bin
80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x723 73272 bytes