PDF malware analysis — malicious · 7e60a3035eaec8bf

MALICIOUS

PDF

12.1 KB

MD5: f0bc9fecbf3210a0f339567c60e53b30 SHA-1: 0712ccb3c764a4d8ce1610da73ceef9c8f3f0043 SHA-256: 7e60a3035eaec8bf2d2d0082e1cbad4720773e6be099d8ea4c2563dd6099e8ba

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link 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 that the JavaScript is used to exploit a known vulnerability (Collab.collectEmailInfo) to execute code. The extracted JavaScript files (legacy_pdfkit_stage_000.js and legacy_pdfkit_stage_001.js) suggest a multi-stage download and execution process. The overall goal is likely to download and execute a second-stage payload.

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` `b3c874c7cbe0f2b556a17f811ab1c200c9c07ba944de1e4b794ed63c8baf7a2d`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12589 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `cf770c5b85dff49bbe426d47c7a41c55d6b38a7f95544420a2bc4f37b8971d9e`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5209 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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