PDF malware analysis — malicious · c7ee34c7f9f79b87

MALICIOUS

PDF

27.4 KB Created: 2010-03-17 07:19:04 Authoring application: IOTPqeUyV9wa (via hSioyLXWc)

MD5: c84584ed12f9725330d16b5d24b884c2 SHA-1: 9cb0c7783129bd987a1186e3acbaa44218c32790 SHA-256: c7ee34c7f9f79b8767d3de764fdde2458ae1a8428be47b76d62a644664702287

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of PDF_EVAL and PDF_FROMCHARCODE suggests the script is heavily obfuscated and uses dynamic code execution. The extracted artifact 'javascript_obj0007_000.js' is likely the source of this obfuscated code. The primary function of this script appears to be downloading and executing a secondary payload, which is a common technique for malware delivery.

Heuristics 5

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.
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_obj0007_000.js` `919fbef9e396471f55e64fb9c74abb7a49f832acb5ee25f72ff1307661f76e74`	pdf-javascript-stream	PDF /JS object 7 at offset 0x238	26841 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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