PDF malware analysis — malicious · 8a206e725c3583fe

MALICIOUS

PDF

11.7 KB

MD5: 0de0c2a0bef217b943237ee9d1175cdb SHA-1: 76f2ff70e264ff5b5580c7f4ff98dbbd8f7f2345 SHA-256: 8a206e725c3583fee7930da003635e1a3762c7c0106d018603558a50e12232c8

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, identified by multiple heuristics including PDF_JAVASCRIPT and PDF_JS. A critical heuristic, CVE_2007_5659, indicates the exploitation of a known PDF vulnerability using JavaScript that is concatenated and evaluated. The presence of deobfuscated JavaScript files ('legacy_pdfkit_stage_000.js', 'legacy_pdfkit_stage_001.js') further supports the execution of malicious code. The primary function of the embedded script appears to be downloading and executing a second-stage payload, as suggested by the file's classification as 'Pdf.Exploit.Agent-36065'.

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` `9ade31b593f2fe75235f8ec0b950793828791e0dba1806d67fc9e35f37ca572e`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	11849 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `7ac78e983c0fc07c716f115bfba89c50be422f00ce7e9a924dd34a4dc1a84174`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	4897 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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