PDF malware analysis — malicious · c6b85d51dcb1509e

MALICIOUS

PDF

12.3 KB

MD5: 9c98a0bfae0292ea0324eddebdce0be0 SHA-1: d31b5b0c5f74719a174ce1e2463d51d190291dd1 SHA-256: c6b85d51dcb1509e1b04a43ed05ae639dd78496ee247d85e52d5d73056f2e4e9

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, identified by the PDF_JAVASCRIPT and PDF_JS heuristics. The critical CVE_2007_5659 heuristic indicates the exploitation of a known vulnerability (Collab.collectEmailInfo) to execute JavaScript. This JavaScript is likely used to download and execute a second-stage payload, as suggested by the extracted JavaScript files and the ClamAV detection of Pdf.Exploit.Agent-36065. The attack pattern involves luring the user into opening a malicious PDF that exploits a vulnerability to run arbitrary code.

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` `aea469315286f1f73ac9bb82688e931f7595148a8b492b6b4c32892d85c86dea`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12561 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `7eed5267f35860081e62b7eee6e98e17de753b54e9cd315e2acc7075789a03fe`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5259 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.