PDF malware analysis — malicious · de9660ff03ea257f

MALICIOUS

PDF

56.6 KB

MD5: dc8cdee2b09d997a3c3da64333a58a2b SHA-1: cb56d38f10cac695d417c67e42c1f5cbc92f2dfe SHA-256: de9660ff03ea257fc2f41cf6cf256ec978ac6ab480ddce4e559a7de4a60ccb72

278 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

This PDF file contains embedded JavaScript that utilizes eval() and unescape() functions, indicative of obfuscation. Critical heuristics identify exploitation of CVE-2009-0927 (Collab.getIcon) and CVE-2007-5659 (Collab.collectEmailInfo), which are known PDF vulnerabilities. The presence of deobfuscated JavaScript further suggests the script's purpose is to download and execute a secondary payload. The file was detected by ClamAV as Pdf.Exploit.Agent-6906.

Heuristics 8

Collab.getIcon — CVE-2009-0927 critical CVE exact CVE_2009_0927

PDF JavaScript calls Collab.getIcon — CVE-2009-0927 is a stack buffer overflow in Adobe Reader triggered by Collab.getIcon() with a crafted argument. Allows arbitrary code execution. (identified after JavaScript deobfuscation)
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-6906 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-6906
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0008_000.js` `4e48a03c442d4d30417aaedfeec67b51af4e0ac49506e3695eb260e06b11af70`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1F3	463 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `63ed2b3e05a1e290272ef49552a673610ff20d3ccdf82eacfbabe582557a5297`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x3F8	11323 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 10 eval/decoder/string-building token(s). Carved artifact contains 4 long base64-like blob(s).

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