PDF malware analysis — malicious · e390574912ccf9fe

MALICIOUS

PDF

11.9 KB

MD5: f98538ae74cea581268b1e32b3ca69ac SHA-1: eb2947e0e94b3bd960cbeb3bc649763e4398fc23 SHA-256: e390574912ccf9feb19baa88014439dc74e56ba0c11daeeab394b023a87c359c

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, specifically leveraging the 'collab.collectEmailInfo' function which is associated with CVE-2007-5659. Static analysis identified this as a critical vulnerability. The embedded JavaScript streams were deobfuscated into 'legacy_pdfkit_stage_000.js' and 'legacy_pdfkit_stage_001.js', indicating a multi-stage exploit. The primary function of the script appears to be downloading and executing a secondary payload.

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` `b4e9e67e6d1e1f3e1b022832b1f4dcd3d992b6ae58df32a69c3d1bdcf0a2f716`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12149 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `1f50c61b1f15ff506995d6f415e99e09e8f4c4b4e435a15237d7881030581622`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5023 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.