PDF malware analysis — malicious · ead065e606f6e6e7

MALICIOUS

PDF

12.9 KB

MD5: 9ae92a96a700dfb58c95affd69ff974e SHA-1: d7b11775315cfcf51747cb0b9d01925cb8aacdb4 SHA-256: ead065e606f6e6e75a9ee548873a4307b932b7bcba86e77efd93ac2ae254ac2d

138 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1059.001 PowerShell T1059.007 JavaScript

The file is a PDF containing embedded JavaScript, which is being used to exploit CVE-2007-5659 via the Collab.collectEmailInfo method. The embedded JavaScript streams, particularly legacy_pdfkit_stage_000.js and legacy_pdfkit_stage_001.js, are indicative of a multi-stage exploit. The primary function of the JavaScript appears to be downloading and executing a secondary payload, a common technique for initial access.

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` `4fd31c78a62474c0664f8ee9f95508223fe1f7a22aaa9580c9ad3121f30f22e1`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12655 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `4683f503ba90c89ec13a49cb5b265e6edc4931696203bb3ed5c418cbe113c03e`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5204 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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