PDF malware analysis — malicious · 32c2ebb4ff0e0b91

MALICIOUS

PDF

16.8 KB

MD5: 2849732c96d3033203e88d06760bac6d SHA-1: e7b953c46d0228ed3c1e57ac8ca9999acdff5519 SHA-256: 32c2ebb4ff0e0b91f151ac019f20677ae5130bba6820dd2e090f85ef074ce303

194 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file exhibits high levels of obfuscation, including the use of eval() and unescape() functions within embedded JavaScript streams. ClamAV detected this as Heuristics.PDF.ObfuscatedNameObject, and ML classifiers also flagged it as malicious. The embedded JavaScript files, javascript_obj0116_000.js and javascript_obj0123_002.js, are the primary indicators of malicious activity, likely serving to download and execute further payloads.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 8

ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
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.
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.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED

The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PSSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
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
`javascript_obj0116_000.js` `ef78b5cd29dad14e664a8bd73da3645c0e18f35daa0e35b3f1974482ff616a04`	pdf-javascript-stream	PDF /JS object 116 at offset 0x4BB	48444 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 247 eval/decoder/string-building token(s).
`javascript_obj0123_002.js` `9b6f41d640319cb8ba9abfcdd9472dfb3aed32e823169e2b0a473303159ce20f`	pdf-javascript-stream	PDF /JS object 123 at offset 0x386	16265 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.