PDF malware analysis — malicious · e5cb46ebc5055c93

MALICIOUS

PDF

12.1 KB

MD5: e33e9ec7a2a527da6248e644240db637 SHA-1: 4f7723f9a9860aae094e10337a0988f750e08d7b SHA-256: e5cb46ebc5055c93f3ba19978c3fc8e4fd41d8448c61d0a0bed4396b2abb78e3

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The critical CVE_2007_5659 heuristic specifically points to the use of Collab.collectEmailInfo for JavaScript execution. This technique is commonly used to download and execute further malicious content. The presence of deobfuscated JavaScript files suggests a multi-stage attack. Confidence is high due to the specific exploit identified and the presence of executable script content.

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` `6afe2fd8766aeea9a9eaeb2d9efb6e6dfba36857a1e3e70736ddc4551af2a163`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12500 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `f6126e6377b9a0a003f46b294e849f4684fed0e14392467e19546b2a25bc58ad`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5186 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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