PDF malware analysis — malicious · 5994d0187884d97a

MALICIOUS

PDF

12.3 KB

MD5: 1edc4d42c6b6fb48624cfcdb8b55f8aa SHA-1: 7b19104ad386507f49da31ab5ce2c5e72385458e SHA-256: 5994d0187884d97a768fefa604cba41bea9da0597b26e6756768b1176b3c27b9

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The file is a PDF containing embedded JavaScript, leveraging the CVE-2007-5659 vulnerability via the Collab.collectEmailInfo method. Heuristics indicate the JavaScript is obfuscated and likely intended to download and execute a secondary payload, as suggested by the extracted JS files. The ClamAV detection further confirms its 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` `804360586def04e8d3f72af77cb8b432eb4a1624b9377d2c6a079db1e387754b`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12125 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `1d0674ffa652394bfea408717b067491e6290835d65f02df4d853ced204c0210`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4914 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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