PDF malware analysis — malicious · cdbb765c6120cac1

MALICIOUS

PDF

31.3 KB

MD5: 02d9ec00a296f5bc355ade93e68a05e5 SHA-1: b450e1ccb8ab63529ba43bc96bb733ae7bb3fad1 SHA-256: cdbb765c6120cac1e39b65caecb99f7306325b8f4d783dc93a72fafb8ebb5d54

226 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious File

The PDF file contains embedded JavaScript that utilizes an eval() call, indicating an attempt to execute arbitrary code. This script is designed to load and execute a Flash object (SWF file), which is a common technique for exploiting vulnerabilities. The ClamAV detection 'Pdf.Exploit.Agent-35955' further confirms the malicious nature of the file and its embedded components.

Heuristics 8

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
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0016.bin` `c2b666a3ef4c191b77b78c037656e50477b8ba3d35fd61ae843a3a1f4d41c5c1`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0x1306	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` `98810db804a95618bd4ddce6a217a6f2294f103d9df3b72f7464e776e6665d18`	pdf-javascript-stream	PDF /JS object 6 at offset 0xEC	3807 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `a9cce8700d273a8fa54556b0e497e0e5debeb3aaead58f1993529e28e214aa77`	deobfuscated-js	split-join delimiter stripped JavaScript at offset 0xD9F	2445 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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