PDF malware analysis — malicious · 7b07efcba3f6337d

MALICIOUS

PDF

12.4 KB

MD5: fb1a6a4e91b165810427eb7851b6119e SHA-1: bd8436bf9d99e521c4d1185780cc2ee02bbb3378 SHA-256: 7b07efcba3f6337df838680363def3a458058246fd5939b4b5bdfd357564aaba

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, identified by the PDF_JAVASCRIPT and PDF_JS heuristics. The critical CVE_2007_5659 heuristic indicates the exploitation of a known PDF vulnerability using a specific JavaScript technique involving the 'collab.collectEmailInfo' method. This technique is used to construct and execute JavaScript code, likely for downloading and executing a secondary payload. The presence of deobfuscated JavaScript files further supports this. The ClamAV detection of 'Pdf.Exploit.Agent-36062' confirms the malicious nature.

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` `ab3d90c76b35d6773486c0a0beb60a40a3649ce5ace8391013018511f9ffb5e7`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	11956 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `be29b345c7fba658f779d8a67f051bb77f86867c26694d8b11ef2a8fa712ecae`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4961 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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