PDF malware analysis — malicious · 1b90fce31b86149a

MALICIOUS

PDF

12.0 KB

MD5: e5a28f97a8db685deac6729b1c573483 SHA-1: 22dc03b56d334a800e97ab9497dde7c7483435d3 SHA-256: 1b90fce31b86149a659631c6655ce3d188d07fc3863061820b7605bb912fde36

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, flagged by multiple heuristics including a critical alert for CVE-2007-5659 related to the 'Collab.collectEmailInfo' function. This function is known to be used in exploits that execute JavaScript. The extracted JavaScript streams, 'legacy_pdfkit_stage_000.js' and 'legacy_pdfkit_stage_001.js', suggest a multi-stage exploit process. The primary intent appears to be the execution of arbitrary code via the JavaScript engine within the PDF viewer.

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` `9f97114b9c81729cf9c83d67286df24b3bba16371f1f469450ce15b51aa0dd32`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12300 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `30337ecd662f4525ffe5794463426d59bc626740c48d34d4060a67e6b6ee0f08`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5107 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.