PDF malware analysis — malicious · f65100cd54979b83

MALICIOUS

PDF

242.5 KB Created: 2012-04-06 18:35:38 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 2.5.000_PHP4 (http://www.tcpdf.org))

MD5: 99c6b079848155f65f4c8bd31f470cee SHA-1: f1ecb6d43685742718270ad5e64f5dfd26620adc SHA-256: f65100cd54979b83eb5b46767cc781bf1f83d0d6bacb63e4a2940732a71230c3

60 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file was flagged by a machine learning classifier as malicious. Heuristics indicate the presence of embedded JavaScript, which is often used to download and execute further malicious content. The embedded URL, while marked as benign, is part of the tracking mechanism for the malicious payload. No document body text was available for analysis, but the presence of JavaScript and the ML classification strongly suggest a malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9691

Heuristics 4

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` `ad331c4779fde51b14965909ef17ff8b60e593e34cbdee184b2f4bce2d48a33d`	pdf-embedded-script	PDF decompressed stream script payload at offset 0x3C637	248262 bytes

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