PDF malware analysis — malicious · ddd7cc12cab5ca96

MALICIOUS

PDF

11.4 KB

MD5: c7761885ac96be8829cd23286093ace8 SHA-1: e7b46125c483b9bb24b50b9cc05a8f1fac90d93f SHA-256: ddd7cc12cab5ca9670920fa949322d470962053e502212e92b905312cb458188

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript, specifically identified as exploiting CVE-2007-5659 via the Collab.collectEmailInfo method. The heuristics indicate that this JavaScript is deobfuscated and saved as 'legacy_pdfkit_stage_000.js' and 'legacy_pdfkit_stage_001.js'. This script is designed to download and execute a second-stage payload, as suggested by the file names and the nature of the exploit.

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` `fd51799bbcc2d268dadffff2d616bf7dfce4fec31882359afb9eca44e2ba497c`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	11583 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `79721c04465fc7abbd6d849368e252a22c67a9a70334d29d9f5d599e3abe72b5`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	4710 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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