PDF malware analysis — malicious · 74009727cae63054

MALICIOUS

PDF

242.5 KB Created: 2012-08-01 21:54:41 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 2.5.000_PHP4 (http://www.tcpdf.org))

MD5: 9a1c4bbce74569ccb7015f75ba42d188 SHA-1: feacf1c24d6b867ce6a057f4b27a07528fec59cb SHA-256: 74009727cae6305449059b3a576b6297be7b6391a8a69dabb368a6cee4cd5a2e

120 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, as indicated by the PDF_JAVASCRIPT and PDF_EMBEDDED_SCRIPT_PAYLOAD heuristics. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded script likely attempts to download and execute a second-stage payload, leveraging the PDF document as a delivery mechanism. The presence of an external URI, though marked as benign, is noted.

Machine Learning

Nyx PDF Classifier malicious score 0.9691

Heuristics 5

ClamAV: Pdf.Dropper.Agent-7272883-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7272883-0
Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD

PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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://it.ph.affinity.com/ctrack0.php?&cmpubid=xvj35&cmskps=&cmsite=www.gujaal.com&cmchannelid=&cmurl=http%3A%2F%2Fwww.gujaal.com%2F296%2Ftamilnadu-election-results-2011-updates-tn-election-results-live&cmref=http%3A%2F%2Fsearch.yahoo.com%2Fsearch%3Fp%3Dtamilnadu%2Blive%2Bnews%2Baiadmk%26ei%3DUTF-8%26fr%3Dmoz35&cmoe=yahoo&cmoq=tamilnadu%20live%20news%20aiadmk&cmvd=1600900-3301361&cmvc=null&cmtitle=Tamilnadu%20Election%20Results%202011%20%7C%20Updates%20TN%20Election%20Results%20Live%20%7C%20Gujaal%20News&rnd=1305270576026&q=result&at=XS&cmip=17&cmis=149&cmid=6&cmdt=p
- http://it.ph.affinity.com/ctrack0.php?&cmpubid=xvj35&cmskps=&cmsite=www.gujaal.com&cmchannelid=&cmurl=http%3A%2F%2Fwww.gujaal.com%2F296%2Ftamilnadu-election-results-2011-updates-tn-election-results-live&cmref=http%3A%2F%2Fsearch.yahoo.com%2Fsearch%3Fp%3Dtamilnadu%2Blive%2Bnews%2Baiadmk%26ei%3DUTF-8%26fr%3Dmoz35&cmoe=yahoo&cmoq=tamilnadu%20live%20news%20aiadmk&cmvd=1600900-3301361&cmvc=null&cmtitle=Tamilnadu%20Election%20Results%202011%20%7C%20Updates%20TN%20Election%20Results%20Live%20%7C%20Gujaal%20News&rnd=1305270576026&q=government&at=XS&cmip=17&cmis=149&cmid=6&cmdt=p
- http://it.ph.affinity.com/ctrack0.php?&cmpubid=xvj35&cmskps=&cmsite=www.gujaal.com&cmchannelid=&cmurl=http%3A%2F%2Fwww.gujaal.com%2F296%2Ftamilnadu-election-results-2011-updates-tn-election-results-live&cmref=http%3A%2F%2Fsearch.yahoo.com%2Fsearch%3Fp%3Dtamilnadu%2Blive%2Bnews%2Baiadmk%26ei%3DUTF-8%26fr%3Dmoz35&cmoe=yahoo&cmoq=tamilnadu%20live%20news%20aiadmk&cmvd=1600900-3301361&cmvc=null&cmtitle=Tamilnadu%20Election%20Results%202011%20%7C%20Updates%20TN%20Election%20Results%20Live%20%7C%20Gujaal%20News&rnd=1305270576026&q=bargain&at=XS&cmip=17&cmis=149&cmid=6&cmdt=p
- http://it.ph.affinity.com/ctrack0.php?&cmpubid=xvj35&cmskps=&cmsite=www.gujaal.com&cmchannelid=&cmurl=http%3A%2F%2Fwww.gujaal.com%2F296%2Ftamilnadu-election-results-2011-updates-tn-election-results-live&cmref=http%3A%2F%2Fsearch.yahoo.com%2Fsearch%3Fp%3Dtamilnadu%2Blive%2Bnews%2Baiadmk%26ei%3DUTF-8%26fr%3Dmoz35&cmoe=yahoo&cmoq=tamilnadu%20live%20news%20aiadmk&cmvd=1600900-3301361&cmvc=null&cmtitle=Tamilnadu%20Election%20Results%202011%20%7C%20Updates%20TN%20Election%20Results%20Live%20%7C%20Gujaal%20News&rnd=1305270576026&q=data%20entry&at=XS&cmip=17&cmis=149&cmid=6&cmdt=p
- http://it.ph.affinity.com/ctrack0.php?&cmpubid=xvj35&cmskps=&cmsite=www.gujaal.com&cmchannelid=&cmurl=http%3A%2F%2Fwww.gujaal.com%2F296%2Ftamilnadu-election-results-2011-updates-tn-election-results-live&cmref=http%3A%2F%2Fsearch.yahoo.com%2Fsearch%3Fp%3Dtamilnadu%2Blive%2Bnews%2Baiadmk%26ei%3DUTF-8%26fr%3Dmoz35&cmoe=yahoo&cmoq=tamilnadu%20live%20news%20aiadmk&cmvd=1600900-3301361&cmvc=null&cmtitle=Tamilnadu%20Election%20Results%202011%20%7C%20Updates%20TN%20Election%20Results%20Live%20%7C%20Gujaal%20News&rnd=1305270576026&q=home&at=XS&cmip=17&cmis=149&cmid=6&cmdt=p
- http://it.ph.affinity.com/ctrack0.php?&cmpubid=xvj35&cmskps=&cmsite=www.gujaal.com&cmchannelid=&cmurl=http%3A%2F%2Fwww.gujaal.com%2F296%2Ftamilnadu-election-results-2011-updates-tn-election-results-live&cmref=http%3A%2F%2Fsearch.yahoo.com%2Fsearch%3Fp%3Dtamilnadu%2Blive%2Bnews%2Baiadmk%26ei%3DUTF-8%26fr%3Dmoz35&cmoe=yahoo&cmoq=tamilnadu%20live%20news%20aiadmk&cmvd=1600900-3301361&cmvc=null&cmtitle=Tamilnadu%20Election%20Results%202011%20%7C%20Updates%20TN%20Election%20Results%20Live%20%7C%20Gujaal%20News&rnd=1305270576026&q=candidate&at=XS&cmip=17&cmis=149&cmid=6&cmdt=p

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off0000d477.bin` `a5337ef1f5a0dfe4dc8fa6b4f3ef847a53624800b5928a0eeef5b888ceecaabc`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xD477	264072 bytes
`embedded_pdf_script_0003c637.bin` `4617cf7ff74ccd89b32c6a21da1154b190397e58a29007f67b296b6024edce40`	pdf-embedded-script	PDF decompressed stream script payload at offset 0x3C637	248262 bytes

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