PDF malware analysis — malicious · fd32edecc3c2e5d9

MALICIOUS

PDF

5.8 KB

MD5: 365a1ea6695313beac42c232876c21c5 SHA-1: 7de7fccfe562216b3f152026911a5e03768005f2 SHA-256: fd32edecc3c2e5d9856ac63137bba94ec7d64630c7f2c1f34a88175f708ec1e3

106 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The JavaScript stream, named 'javascript_obj0017_000.js', is obfuscated using unescape() calls, a common technique for hiding malicious code. The presence of RichMedia (Flash) and an embedded file further suggests a multi-stage attack. The script's likely intent is to download and execute a second-stage payload, leveraging the PDF vulnerability.

Heuristics 6

RichMedia (Flash) high PDF_RICHMEDIA

PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits
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.
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0014.bin` `b996e1cbe6184fdc35708b79d833d8762273909bc441eb21bad1c93ddfaebacc`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0x4D4	2372 bytes
`javascript_obj0017_000.js` `6b623da6e0763a3ef8fab4c5579f0ec4f2446b96f6c0e0eebf65e7799cd01217`	pdf-javascript-stream	PDF /JS object 17 at offset 0xECC	1659 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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