PDF malware analysis — malicious · f71de3452ac71f55

MALICIOUS

PDF

9.7 KB

MD5: 3200e4df8e0f22fc6f8075783800c59b SHA-1: 260ea7672322760526d50020c2891575a6cf2607 SHA-256: f71de3452ac71f554e03ff5942457528a4432fbe4efa56de4412cdfc89e49ba2

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link T1204.002 Malicious File

The file is a PDF containing embedded JavaScript, which is a common delivery mechanism for exploits. Critical heuristics indicate the use of CVE-2007-5659, a known vulnerability in Adobe Reader, and ClamAV detected it as Pdf.Exploit.Agent-35905. The JavaScript is heavily obfuscated but appears to be designed to download and execute a second-stage payload, as suggested by the presence of multiple deobfuscated JavaScript files and the 'unescape()' function call.

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` `698ed3bfbdb6b1beaae87ad98966baac64fbdf723c7bc2884c4c8c5d5289117b`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2FE	12741 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` `e281f1c766aff07baa9c740c64951c773426fa889816a310418b83bc3551853a`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2FE	5363 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.