PDF malware analysis — malicious · 383a3c2b9c8acce6

MALICIOUS

PDF

11.8 KB

MD5: 9eb09535eb3d885c6c8bbb2191e8db8c SHA-1: 3e32af4d04ffb09db555fe0248906dc1e7c182e6 SHA-256: 383a3c2b9c8acce66b5fa861eb9890eb48f778559d8cde417d1b2c2678516a75

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The file is a PDF containing embedded JavaScript, which is a common delivery mechanism for exploits. Heuristics indicate the use of CVE-2007-5659, a known vulnerability in Adobe Reader related to JavaScript execution. The embedded JavaScript streams, named 'legacy_pdfkit_stage_000.js' and 'legacy_pdfkit_stage_001.js', suggest a multi-stage loading process typical of exploit kits. The ClamAV detection 'Pdf.Exploit.Agent-36065' further corroborates the malicious nature of the PDF.

Heuristics 5

Collab.collectEmailInfo — CVE-2007-5659 critical CVE exact CVE_2007_5659

PDF JavaScript calls Collab.collectEmailInfo — CVE-2007-5659 is a buffer overflow in Adobe Reader triggered by a long argument or heap-sprayed message field passed to Collab.collectEmailInfo(). Part of a series of Acrobat JS API exploits. (identified after JavaScript deobfuscation)
ClamAV: Pdf.Exploit.Agent-36065 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36065
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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `9c67560e8c63b720885d3efc1627b844b86a6ec08e99e5b65a22eae832045756`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19C	431 bytes
`legacy_pdfkit_stage_000.js` `80b4dac7c7d1fbbea67f40af12a2535a872d83c7bd51785721223d4ab5aa9bee`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12162 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `4bd6de12e545bbb5bede4338f67b5d0e11fd6d86c03d251eb51db6e007284692`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5044 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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