PDF malware analysis — malicious · ea7c3b26cecc7aca

MALICIOUS

PDF

12.7 KB

MD5: 8acde55ba387db6fc4942c35cf486e82 SHA-1: e491de9ab9f34f7e7d86f7d18c70d373990cca4a SHA-256: ea7c3b26cecc7aca72ae899786d39f922a3f0513ed6cc165eaf7d79eef35b4eb

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript that leverages the CVE-2007-5659 vulnerability (Collab.collectEmailInfo). This script is designed to deobfuscate and execute further JavaScript stages, indicated by the extracted files legacy_pdfkit_stage_000.js and legacy_pdfkit_stage_001.js. The ClamAV detection name 'Pdf.Dropper.Agent-7319518-0' further confirms its malicious nature as a dropper.

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.Dropper.Agent-7319518-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7319518-0
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` `1847af0a099665b6ac45af66402e56ed64237a1b287618ee3d6643267fda6f35`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19D	343 bytes
`legacy_pdfkit_stage_000.js` `c5b27239c2ace58ee6dabb5625a527c4ed0bb3f4b50eaa36388546f8fa56ea27`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F0	12512 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `a74e5594da8d4bea517601325ecbf83224cff6cb6e07fb219dbe91686b3d60da`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F0	5085 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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