PDF malware analysis — malicious · f1d506c6edbc3c85

MALICIOUS

PDF

9.1 KB

MD5: 58125b25ca0bc7729be2d32b15f754cb SHA-1: 4e0dff9ba7413d1da0aa6af30989b634e11dc137 SHA-256: f1d506c6edbc3c85524fb9a2b214cd415275f69e33b3e226c5dc95b7b2cdb0a9

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is a PDF containing embedded JavaScript, which is a common delivery mechanism for exploits. Heuristics indicate the use of CVE-2007-5659, specifically targeting the Collab.collectEmailInfo function. The embedded JavaScript, after deobfuscation, likely downloads and executes a second-stage payload, as suggested by the ClamAV detection signature 'Pdf.Exploit.Agent-35905'. The document body itself is unreadable, but the presence of exploit-related heuristics and script content strongly suggests a malicious intent.

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` `6a349825770425675e4ebbf3754eeb8a8d66928854519a783d6c6e11f5260dc3`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2FE	11713 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` `f8773515f3cd45a1970cc689e7e36b04c5f0512ba7aa3beb9b4c3eb05d67daa3`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2FE	4887 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.