PDF malware analysis — malicious · 1fa531de7a822417

MALICIOUS

PDF

3.0 KB

MD5: 687096d736d4194896c25229e97511dd SHA-1: 960d13a52f1683216077599e604f9e29fd5092be SHA-256: 1fa531de7a82241706fc43b7f37ac937bd2db61db00d2d0b15c1013302f2da00

256 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

This PDF file contains embedded JavaScript and triggers an OpenAction, indicating it's designed to execute code upon opening. The critical heuristic firing for CVE-2009-0927 (Collab.getIcon) strongly suggests exploitation of this known PDF vulnerability. The embedded JavaScript stream, identified as 'javascript_obj0009_000.js', is likely responsible for downloading and executing a secondary payload, as indicated by the 'Suspicious extracted artifact' heuristic. The ClamAV detection further confirms its malicious nature as a dropper.

Heuristics 7

Collab.getIcon — CVE-2009-0927 critical CVE exact CVE_2009_0927

PDF JavaScript calls Collab.getIcon — CVE-2009-0927 is a stack buffer overflow in Adobe Reader triggered by Collab.getIcon() with a crafted argument. Allows arbitrary code execution. (matched in decompressed stream)
ClamAV: Pdf.Dropper.Agent-7237519-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7237519-0
OpenAction trigger high PDF_OPENACTION

PDF has an /OpenAction — code runs automatically when opened
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
Suspicious extracted artifact high 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.
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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0009_000.js` `3487d6aef0032ee679553799480c360ecd500055eaf2f7ba7c902c39ddbc7d5a`	pdf-javascript-stream	PDF /JS object 9 at offset 0xD6	2252 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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