PDF malware analysis — malicious · 3b1eb8ad8a948815

MALICIOUS

PDF

11.6 KB

MD5: c6cfed5e67d5355d8b8bcdfbaef61d40 SHA-1: 8aed1e65640d62ea54c343aba981921375c1985e SHA-256: 3b1eb8ad8a948815d6a7019b25cf554cc63c98663d01fa763b0646e5c9461af1

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 use of a known exploit technique involving the Collab.collectEmailInfo function to execute JavaScript. This script is likely designed to download and execute a second-stage payload, as suggested by the extracted JavaScript files and the ClamAV detection signature Pdf.Exploit.Agent-36065. The obfuscated nature of the extracted JavaScript and the presence of multiple stages point towards a downloader or dropper functionality.

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` `d647fb9a5ab6ce3da3babf7a9a05af7d9902d88fdd65c4cc8939d8894c5dcabc`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	11792 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `4b22844f9b1400361e115a4d7e1cd29572d81a37ea5d0bc04a7b6a82116b0cbe`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	4852 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.