PDF malware analysis — malicious · 03ca59c77dc8c9b4

MALICIOUS

PDF

49.8 KB Created: 2011-04-27 02:58:28 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))

MD5: 9d054a137867ebd74beeca720a6b8ab3 SHA-1: 2889be4cdf056c646e3d6cf0834b5f5885fe63a5 SHA-256: 03ca59c77dc8c9b4e1df91d090c6ec7ead95dfcac75e6d9b9df78b8ad3086603

64 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution

The sample is a PDF file that contains a critical heuristic firing for the CVE_2008_2551 exploit, which is known to download and execute arbitrary code. The presence of external URIs, including one pointing to 'artisanballoonz.com/system/system.exe', further supports the likelihood of a secondary payload download. The exploit targets client execution, and the embedded URLs suggest a potential initial access vector via spearphishing.

Machine Learning

Nyx PDF Classifier suspicious score 0.2677

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://www.vije.javananeirani.ir/
- http://www.vije.javananeirani.ir/��
- 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.

Filename	Kind	Source	Size
`stream_002_off0000088f.bin` `80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x88F	73272 bytes

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