PDF malware analysis — malicious · ea0c073e8aecd0ff

MALICIOUS

PDF

12.1 KB

MD5: acb003a1e6ef105064b2f833dccd870b SHA-1: c52e923946092d1f7b61ec73792fe5dff4073725 SHA-256: ea0c073e8aecd0ff7a70dc69ad8cdfce07854a25bda7cbd1f997eb4d7b7e7d71

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The critical heuristic CVE_2007_5659 indicates the exploitation of a known PDF vulnerability using JavaScript. The embedded JavaScript streams, identified as legacy_pdfkit_stage_000.js and legacy_pdfkit_stage_001.js, are likely responsible for executing the malicious payload. The ClamAV detection further supports the malicious nature of the file. The attack pattern involves luring the user to open a malicious PDF which then exploits a vulnerability to run arbitrary code.

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-36062 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36062
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` `068944f8c011a88ab770b45c6de142b9305a1f515d410204d5eadd9ac2b5bfb3`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19B	373 bytes
`legacy_pdfkit_stage_000.js` `d729d029ed4389cb39f27dc862ac46ded2d53ef299e53ac7ec4ccb84b45ce6d8`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	11994 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `b6ce4b69de507815040096febf030d1baa07ec10d5c5015a6e274877fe06b86c`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4929 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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