PDF malware analysis — malicious · 906fada2de69efd4

MALICIOUS

PDF

9.3 KB

MD5: 4962df37a3d010240e125488ff73fb7a SHA-1: 8e116c09a09000913265dabe490873f21cb696df SHA-256: 906fada2de69efd4c3270ad942ba806cc1581032280c45446a2bc3bc372297ad

126 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains embedded JavaScript that leverages the CVE-2007-5659 vulnerability (Collab.collectEmailInfo). The JavaScript is obfuscated and uses eval() and String.fromCharCode, indicating it's designed to execute malicious code. The primary function appears to be downloading and executing a secondary payload, as suggested by the heuristic firings and the presence of deobfuscated JavaScript streams.

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)
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (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.
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_obj0005_000.js` `d2f1f408ccdf2b4ba72138183426467affc9929b29cbc6e7ec4fa906269c614b`	pdf-javascript-stream	PDF /JS object 5 at offset 0x107	315 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `93ddc8e5e7fd259a6266aecfb9631c482dd75c863427f7be924ec3f1093f2e4b`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x318	11730 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` `e03af992e3363e92fb024af8c9608fde5f1b86610b552cce1266dd61dd315574`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x318	4858 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.