PDF malware analysis — malicious · 9d444dcda4f7a0aa

MALICIOUS

PDF

11.5 KB

MD5: f73edf043188bcb507432ce63bed2b72 SHA-1: c91d3c7d2446c3f9362a8b5bfcf2f691d53e3372 SHA-256: 9d444dcda4f7a0aa2c8a448c295feb2da69e252cdef7cdc1da576cb8030ef05e

146 Risk Score

Malware Insights

MITRE ATT&CK

T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains embedded JavaScript that exploits CVE-2007-5659, a known vulnerability in Adobe Reader. The critical heuristic firing for CVE_2007_5659 indicates that the exploit attempts to collect email information, likely as a precursor to further malicious activity. The presence of multiple JavaScript streams and the ClamAV detection further support the malicious nature of this file.

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-36079 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36079
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.
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules. (matched inside decoded stream)
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` `ef8bdac794684ae9cd4eb7091d80e1c5ca478c06c639d72d01626c1f7ce78b6d`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19C	578 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` `630a2718f150ccf8e6555cf8e498fb1cd55208a0f86f2a8f7e5e94c591311e9e`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x36F	11885 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `485ff39e7bd370762aa2348d17ca4967b700205d2d67f950070f1cc3ccdf9a7b`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x36F	4860 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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