PDF malware analysis — malicious · 9e05eae3886032aa

MALICIOUS

PDF

9.7 KB

MD5: 061e491783346b2586ed6c3d63307aba SHA-1: e6069e87738af5864ca64286fc70785d23cc9da4 SHA-256: 9e05eae3886032aadef18d181ac6cbdc61888c7b4f41c8ccca3e3ec354c904b5

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript, which is triggered by the CVE-2007-5659 vulnerability (Collab.collectEmailInfo). The critical heuristic firing indicates that the JavaScript is obfuscated and uses eval() and String.fromCharCode, suggesting it's designed to download and execute a secondary payload. The presence of multiple deobfuscated JavaScript files further supports this. No specific family could be identified, but the attack pattern is consistent with a PDF-based 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)
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` `f30ba845709ae5e77a75a27d2c9858f6d8d50221bc86d535624ca7bb606f8066`	pdf-javascript-stream	PDF /JS object 5 at offset 0x107	300 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` `794c22359fd446c793536b6e7f5dad320e4331ffc0d1aa8e7c6bbe9566c7bb58`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x30D	12597 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` `cf460009e7610da723c3749550d25316930e5c72345b7d517b2cb13f55b3f6cc`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x30D	5110 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.