PDF malware analysis — malicious · 2c45c1d47c78654e

MALICIOUS

PDF

11.7 KB Created: 2009-02-19 14:45:49 -02:00 Authoring application: Writer (via OpenOffice.org 3.0)

MD5: 87d4abdb36a91012935b3f9e351dc4d5 SHA-1: c0e00c13b2fa95687662c813ff80efa593ed3af5 SHA-256: 2c45c1d47c78654ec8d426143a1e89760df78cfb9efe2984e868c9dfbbe32df5

198 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript that utilizes eval() and unescape() functions, indicating obfuscated code execution. The 'Pdf.Exploit.Agent-35541' ClamAV detection and the presence of a suspicious JavaScript file ('javascript_obj0027_000.js') strongly suggest this PDF is designed to exploit a vulnerability. The primary goal appears to be the execution of arbitrary code, likely for downloading and running a second-stage payload.

Heuristics 7

ClamAV: Pdf.Exploit.Agent-35541 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35541
Launch action high PDF_LAUNCH

PDF contains a /Launch action with an unresolved or extension-less target — treat as potentially dangerous
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0027_000.js` `b2d57e2adacd9e05311fd06f44bdbcb3c9386b55e05a47cdec1fd0e5dc5e7e14`	pdf-javascript-stream	PDF /JS object 27 at offset 0x21C1	62706 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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