PDF malware analysis — malicious · 2a48c5edaf5038b8

MALICIOUS

PDF

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

MD5: cc09384efda84b0b19691a13850ab6e3 SHA-1: 0b214b556ac3e5bcc30fd043c7d2a1082adea48d SHA-256: 2a48c5edaf5038b8993544684d77751d1e55f2be8ee619b848553496b29fce5d

98 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The PDF_LAUNCH heuristic suggests an attempt to launch an external process, and the PDF_EVAL heuristic points to the use of eval() for code execution. The embedded JavaScript file, 'javascript_obj0027_000.js', is likely responsible for downloading and executing a secondary payload. The confidence is moderate due to the lack of specific IOCs beyond the embedded script name and the obfuscated nature of the document body.

Heuristics 5

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)
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` `bb18196c3d77c7dc1e08c92fdb1d1163429fdb89a729c083566670716cbee307`	pdf-javascript-stream	PDF /JS object 27 at offset 0x1C1B	3350 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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