PDF malware analysis — malicious · a228aba7b1ab2734

MALICIOUS

PDF

12.3 KB

MD5: defedcd3781a135f44d5766592ca9cf2 SHA-1: 17cd07458df05eb9d1a9b81f5f47658bb55404ec SHA-256: a228aba7b1ab27344194eae76b095a510e561c4678fd72304e4824e9ba6e7e90

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript, identified by the PDF_JAVASCRIPT and PDF_JS heuristics. The critical CVE_2007_5659 heuristic specifically indicates the use of a known exploit technique involving the Collab.collectEmailInfo JavaScript function to execute arbitrary code. This suggests the file is designed to exploit this vulnerability to deliver a malicious payload. The presence of deobfuscated JavaScript files further supports the execution of malicious scripts.

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` `8c22166f9e97aa0d659b8153f55be1bf4431d94e936a716c02d7ec0947a5d643`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12624 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `33f3a4c07bf9547c7b37272625f3388fb84415e82417539845ff395f73e638aa`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5233 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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