PDF malware analysis — malicious · c60bab1a9f6ebdfa

MALICIOUS

PDF

12.1 KB

MD5: 1ab603b99715add102d1b3e384652c05 SHA-1: a1fb76c61e6836d3e949be42f4b9c06306897a62 SHA-256: c60bab1a9f6ebdfa51a92ac2dfd7c3e1470c6bafb77fe08957a28a11f102740e

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 a known exploit targeting a vulnerability in PDF handling, specifically related to the Collab.collectEmailInfo function. This exploit likely leverages the embedded JavaScript to download and execute a secondary payload. The extracted JavaScript files, legacy_pdfkit_stage_000.js and legacy_pdfkit_stage_001.js, further support this, suggesting a multi-stage attack. The ClamAV detection as Pdf.Exploit.Agent-36065 confirms the malicious nature.

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` `f3ae46075a2c8aaaa62c6a99624d19465de1f9aa902d08ca42a44336be60d000`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12306 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `1e57330c2cbd4af92bf4a1e614d05cd087c2cae330f0b4653dc1176a074ae623`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5119 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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