PDF malware analysis — malicious · dc2ff233c69464d7

MALICIOUS

PDF

9.5 KB

MD5: d1144e3da73348760aafe9e808bfb354 SHA-1: 6d8259654d8b3816489c6893b3d462a28433034b SHA-256: dc2ff233c69464d7be6a57c66c7d3226f747f11cbf8ebe497f07382719483d96

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The critical heuristic firing for CVE_2007_5659 indicates the exploitation of a known vulnerability in PDF handling. The embedded JavaScript, particularly the deobfuscated streams, likely contains code to download and execute further malicious content. The ClamAV detection further corroborates the malicious nature of the file. The attack pattern involves exploiting a PDF vulnerability to run arbitrary code, which is then used as a downloader.

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` `4bbc9631ad2c2a18ccf13d24bb724cebd52a906ef69365965345b350305d151b`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2FE	12030 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` `034cd684ca09add687c92dafa6c5d981c5d55dd2e2fd1fe625062ebe30b278f7`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2FE	5104 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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