PDF malware analysis — malicious · d14fc8fa1c6b99bd

MALICIOUS

PDF

12.5 KB

MD5: bf20e62b089026db35196374e566cdf0 SHA-1: 63b3f34500bc14351f3dbbeee7d46822d033519f SHA-256: d14fc8fa1c6b99bd7061b997c14b1d20918ce9cee474eb3eaf8ffc2cced34a7f

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF file contains embedded JavaScript that exploits CVE-2007-5659 using the Collab.collectEmailInfo method. The JavaScript is obfuscated and appears to be designed to download and execute a secondary payload, as indicated by the extracted JavaScript files and ClamAV detection. The primary attack vector is likely user interaction with the malicious PDF, leading to exploit execution.

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` `c5aa4b3db2400d3e89c36f9833063a7122e34a118d7bfa18af6f5f74b333d428`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12141 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `485051ecf3eb2f0dcf7b20ab0477397d4cdfd09f8e78280a403cd1aa553da6d2`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4960 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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