PDF malware analysis — malicious · 2dda4f51265c4989

MALICIOUS

PDF

9.2 KB

MD5: 59ac5efd81a13cec2c5b623bd15906b7 SHA-1: 10ecfdc5d13da066fd6e5a626de6364ce652228d SHA-256: 2dda4f51265c49898b29f658ce16b27714a6fc08c9296afe823b6645a3ddc41b

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript that is obfuscated and utilizes the unescape function. Critical heuristics indicate the exploitation of CVE-2007-5659 via the Collab.collectEmailInfo method, which is a known technique for executing arbitrary code within PDF documents. ClamAV also identified this as Pdf.Exploit.Agent-35905. The primary attack vector appears to be the exploitation of this PDF vulnerability to run malicious scripts.

Heuristics 6

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-35905 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35905
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
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` `d8a6b4ad1abf04d0c4a4f89535cfb57f7312edef25c443f4e844c8ec9d0929dd`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19B	352 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `781f0b4c8972c4dad0ade045e097ec879560d5b949a022313d9b645865908edd`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2FE	11877 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `e2f81f8555af53048543795b705279dc41941a8747820e4ca6ea2a3a370d1df2`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2FE	4939 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.