PDF malware analysis — malicious · 569cfdac652d4e0c

MALICIOUS

PDF

1.9 KB

MD5: 86312d544d572a8248292a3a3d448c82 SHA-1: c0032c5873188af23b9a5fd1e13d31cf1bdaafaf SHA-256: 569cfdac652d4e0c9c796604deee1427020db3190dea107e3a88a5a21ac90636

158 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, which utilizes `eval()` and `unescape()` functions. This strongly suggests the execution of obfuscated code. ClamAV detection as 'Pdf.Exploit.Agent-35930' further confirms its malicious nature. The JavaScript is likely designed to download and execute a secondary payload, a common technique for initial access.

Heuristics 6

ClamAV: Pdf.Exploit.Agent-35930 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35930
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
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.
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_obj111611_000.js` `f23e505f155bfa9b9f356fa9fddf8d7fcafcc37fc2df3878e575e72c00c819d4`	pdf-javascript-stream	PDF /JS object 111611 at offset 0x667	697 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `969b9ce13b4f56365f9c8c9976eaaf7dbf1db155fcddaf93bda7a1df68a1a3e0`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x189	2810 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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