PDF malware analysis — malicious · eabab949692286a1

MALICIOUS

PDF

241.8 KB Created: 2015-06-20 20:35:50 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 2.5.000_PHP4 (http://www.tcpdf.org))

MD5: 9727b97343dbba642c87ad3486ecf6b0 SHA-1: 3b67c2644c056c2ee7b756ac5615fb97963dbb19 SHA-256: eabab949692286a1512f21063b9ff1be20f1fc8f1ec8d55eb197978b6576ac36

60 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file was flagged by a machine learning classifier as malicious and contains embedded JavaScript. The heuristics indicate a JavaScript action and an embedded script payload, suggesting the script is designed to download and execute a second-stage payload. The ML classifier's high confidence score supports this assessment.

Machine Learning

Nyx PDF Classifier malicious score 0.9304

Heuristics 3

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.
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.

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off0000c310.bin` `a5337ef1f5a0dfe4dc8fa6b4f3ef847a53624800b5928a0eeef5b888ceecaabc`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xC310	264072 bytes
`embedded_pdf_script_0003b5b8.bin` `f93beb5518d591edb1cff5a1fdc5196c43bac055af03c1b4097057acd30d1794`	pdf-embedded-script	PDF decompressed stream script payload at offset 0x3B5B8	247612 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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