PDF malware analysis — malicious · e03bfce4a13f5555

MALICIOUS

PDF

12.6 KB

MD5: 19c7d6bbb4cc4c092044e74471f4977b SHA-1: 6fc0e0ce624b722ba9a722b415fccbdbb891622d SHA-256: e03bfce4a13f5555e0626b717e16bb626fc3a859f22c10cb7f25d0b43a03145e

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.001 Malicious Link/Object

The file is a PDF containing embedded JavaScript that exploits the CVE-2007-5659 vulnerability via the Collab.collectEmailInfo method. This JavaScript is further obfuscated and split into multiple streams, indicating an attempt to evade detection. The primary function of the embedded script is to download and execute a secondary payload, as suggested by the heuristic firings and the presence of deobfuscated JavaScript files.

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-36062 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36062
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` `068944f8c011a88ab770b45c6de142b9305a1f515d410204d5eadd9ac2b5bfb3`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19B	373 bytes
`legacy_pdfkit_stage_000.js` `299984fc8a629453c2dd25ef7a9e13ed0a2b9d9d467c100d331a4705da594a87`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12364 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `863d32e2daddf1d7e941103591fb847eb526303ea944a2cf561e363c00650efc`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5067 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.