PDF malware analysis — malicious · 2b4808a90fefbe3a

MALICIOUS

PDF

11.6 KB

MD5: 339daf9e7c4d7930cd097da7dd7fdb15 SHA-1: a616a399fafb4588da9d39419f0d930e949d8fbb SHA-256: 2b4808a90fefbe3a91dce07b53979feafa158e6de00f8d5d3d0d1de290402d72

138 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript that leverages the CVE-2007-5659 vulnerability, specifically using the 'Collab.collectEmailInfo' method. This technique is commonly used to download and execute further malicious content. The presence of deobfuscated JavaScript files further supports this malicious intent.

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` `06278f5a27ada52273307980bcaf7a197cdcb0a2e102f7a481387aacbc4399eb`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	11884 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `f3453a834ffbef6d21af6ee12e589513c1a8f4e2ff75628524a9ab99670746d7`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	4943 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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