PDF malware analysis — malicious · b5bfe2f12a01a80e

MALICIOUS

PDF

12.1 KB

MD5: e63751e1dcfc3813fe5cc1fca6ddc427 SHA-1: 74977c186d13d560fc96836533a8a35cab856685 SHA-256: b5bfe2f12a01a80e31d04d969af9d688b53339b5ea40ca791edc9a72c9540a92

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript and triggers a critical heuristic for CVE-2007-5659, indicating an exploit attempt. The presence of deobfuscated JavaScript files suggests the execution of malicious code. This code likely downloads and executes a second-stage payload, as indicated by the file type and exploit heuristics. The ClamAV detection further supports 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-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` `9fd500c97cff0592febdd3538ffd5bd40db6f0af23ff1cdfe50bff54c4799f5d`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12492 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `fa176a9733c402a8b30c488300b4eed14237f848dd2c8d109ad367b5c20e1d20`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5169 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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