PDF malware analysis — malicious · 3bc7ecd33ee258ff

MALICIOUS

PDF

31.7 KB

MD5: 578ff9a7de32628c9c0b899aa8e0d3a1 SHA-1: ff67d11afc3809a33e1cf126e986e3e677321515 SHA-256: 3bc7ecd33ee258ff0fc979389b1d5e1a6bf56f79890c52f58042aa894fd8148d

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious File

The file is a PDF containing embedded JavaScript and a Flash object (ggclvTZFhfP.swf), both of which are flagged as critical indicators of malicious activity. ClamAV detection as 'Pdf.Exploit.Agent-35955' further confirms its malicious nature. The embedded Flash content is likely used to exploit a vulnerability, leading to the execution of malicious code, potentially downloading additional payloads.

Heuristics 7

ClamAV: Pdf.Exploit.Agent-35955 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35955
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
RichMedia (Flash) high PDF_RICHMEDIA

PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector
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
`ggclvTZFhfP.swf` `c2b666a3ef4c191b77b78c037656e50477b8ba3d35fd61ae843a3a1f4d41c5c1`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0x1484	26774 bytes
Detection ClamAV: Pdf.Exploit.Agent-35955 Obfuscation or payload: likely Carved artifact entropy is 7.99, consistent with packed or encrypted content.
`javascript_obj0006_000.js` `efeca661752f5743fee951e1aaa731efdcd7fea9847424a2a9c5428ab72a769d`	pdf-javascript-stream	PDF /JS object 6 at offset 0xEC	4201 bytes

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