PDF malware analysis — malicious · f492ac8811c44329

MALICIOUS

PDF

11.9 KB

MD5: 3193e5a4af8888b118f925055e6cf47a SHA-1: 5f2b03c1ad0221697c0e3f3a760d1ebc1296701c SHA-256: f492ac8811c443293c317e26c25eb90cc28c1d2bece0acb16b30aa04524f9bcf

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The file is a PDF containing embedded JavaScript, flagged by multiple heuristics as malicious. Specifically, the CVE-2007-5659 rule indicates the exploitation of a known vulnerability via JavaScript. The presence of deobfuscated JavaScript files suggests the script's purpose is to download and execute further stages. The ClamAV detection further corroborates the malicious nature of the file.

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` `63a99709b968cabc122d06f56b35327b4eeb7c40cea28e3be947de5ab8527091`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12222 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `fdb0423cb45b1f1954f378b790fb6ac29c9ee048b45f2f1800a0986c4803beaa`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5012 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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