PDF malware analysis — malicious · a7aa67c3a682fc08

MALICIOUS

PDF

13.7 KB Authoring application: Honest and vanishing shaking them up

MD5: 580b03c00c50a8254376e31b1506161c SHA-1: 3a6e07172e573f55c444148eb8c3d972393e297e SHA-256: a7aa67c3a682fc087375faa0f8244d7d2923ec06a5b64e1ae102c467a7d77643

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The JavaScript stream, identified as javascript_obj0018_000.js, uses unescape() and String.fromCharCode, suggesting obfuscation to hide its malicious intent. ClamAV detection as 'Pdf.Dropper.Agent-7290459-0' strongly suggests this is a dropper. The document body text appears to be corrupted or irrelevant, but the presence of obfuscated JavaScript and the dropper signature point to a payload delivery mechanism.

Heuristics 6

ClamAV: Pdf.Dropper.Agent-7290459-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7290459-0
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.
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0018_000.js` `bf5dcb907ff93ae97811710b21f9a34eae397d00d4423ff7c66d18d58a8c7c74`	pdf-javascript-stream	PDF /JS object 18 at offset 0x4BA	161645 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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