PDF malware analysis — malicious · e0a02ef6dfca5699

MALICIOUS

PDF

592.9 KB Created: 2011-04-27 02:30:24 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))

MD5: a740c6da2e9b9c231c8fd8949d7bb548 SHA-1: 4b8772770180e59ddeabdc42720f85444e12d7a1 SHA-256: e0a02ef6dfca569956c9b85315dd266ee84891db6abf68f94b64e8670b3d3eed

76 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The critical heuristic firing for CVE_2008_2551 indicates the PDF exploits a known vulnerability to download a secondary payload. The embedded URL http://artisanballoonz.com/system/system.exe is likely the source of this payload. The PDF_JS heuristic also suggests the presence of embedded JavaScript, which could be used to facilitate the exploit or download process.

Heuristics 4

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 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.
Optional Content Group with action trigger low PDF_OPTIONAL_CONTENT

Optional Content Group (layer) co-occurs with an action trigger — content can be selectively hidden from viewers or scanners while the action still fires on open
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.

Filename	Kind	Source	Size
`stream_004_off00000cd4.bin` `80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xCD4	73272 bytes

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