PDF malware analysis — malicious · 7e55e5efcee445d2

MALICIOUS

PDF

11.8 KB

MD5: e2825329a3fd63f9429778435b4aa5a8 SHA-1: 6e9bd68ce72d1528e0342ac61716e0d9a77e708e SHA-256: 7e55e5efcee445d20af4c790b580674c12d27fbf4c2c0730ee209f75a2eb936e

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link T1204.002 Malicious File

The PDF file contains embedded JavaScript that leverages the 'collab.collectEmailInfo' function, a known indicator for the CVE-2007-5659 vulnerability in Adobe Reader. The heuristics indicate that this JavaScript is used to launch further stages, likely for downloading and executing additional malicious content. The presence of deobfuscated JavaScript files named 'legacy_pdfkit_stage_000.js' and 'legacy_pdfkit_stage_001.js' further supports this. The overall attack pattern suggests a PDF-based exploit delivery mechanism.

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` `497546af8ede127c663cea3f220c7fa35f4fb89575059e7f92524a7827dd5ebb`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12097 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `9dcd5c2b71396a36cc62bc3d432db1e00fd4cd048f0cd3be64ca97ab3b2f4dbd`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	4985 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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