PDF malware analysis — malicious · 06dba8918306f0fa

MALICIOUS

PDF

239.8 KB Created: 2014-02-05 15:09:36 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 2.5.000_PHP4 (http://www.tcpdf.org))

MD5: 476cb3aa93d670402734895cb3e0e8c5 SHA-1: 08c753434356b3ea6c2e90c4e535d551bbbefe33 SHA-256: 06dba8918306f0fa1eb6da474d5d21ea1108b197eac96422e1d1f762824767c8

114 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, indicated by the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic and the presence of a 'pdf-embedded-script' artifact. This script is likely responsible for downloading and executing a secondary payload, as suggested by the 'ML_NYX_PDF_MALICIOUS' and 'CLAMAV_DETECTION' firings. The embedded script itself is obfuscated, making a precise analysis of its actions difficult, but its presence strongly suggests an exploit attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9551

Heuristics 4

ClamAV: Pdf.Dropper.Agent-7131721-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7131721-0
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.
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
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.gnu.org/copyleft/gpl.html

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_002_off0000bb3a.bin` `a5337ef1f5a0dfe4dc8fa6b4f3ef847a53624800b5928a0eeef5b888ceecaabc`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xBB3A	264072 bytes
`embedded_pdf_script_0003adc4.bin` `a4d6e39c52e57950e4d10a6dc0250c55b0d369b29466b81bccc8a7c7ac968a6a`	pdf-embedded-script	PDF decompressed stream script payload at offset 0x3ADC4	245576 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.