PDF malware analysis — malicious · 1bb3a891767c69c4

MALICIOUS

PDF

2.1 KB

MD5: d18eb5c5649095a59a3140617649fe24 SHA-1: 8c40cabe5a36c15c1d7e8e4a007dbba89400fd39 SHA-256: 1bb3a891767c69c4e4fe236f6262a46ef9d5a8138d0ab82532147c00d3886149

194 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious Link: Malicious File

The PDF document contains the EICAR test string and prompts the user to click to save and launch an embedded file, which is identified as the EICAR test file. Heuristics indicate the presence of JavaScript and obfuscated PDF elements, suggesting an attempt to disguise the malicious payload. The embedded EICAR test file is explicitly named and its content is present in the document body.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 6

ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
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.
ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX

Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
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

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`EICAR.txt` `275a021bbfb6489e54d471899f7db9d1663fc695ec2fe2a2c4538aabf651fd0f`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0x62C	68 bytes
Detection ClamAV: Eicar-Test-Signature Obfuscation or payload: unlikely
`javascript_obj0008_000.js` `c79586b6ce33258a4a3246f592054a0720afaa39e08ec5d2fa6c2c1d19c42b91`	pdf-javascript-stream	PDF /JS object 8 at offset 0x4FF	58 bytes
`javascript_obj0008_001.js` `a99f0aad140b19a3f2f03812ca412c6d983fae48b9344738a95bf360fb8f644c`	pdf-javascript-stream	PDF /JS object 8 at offset 0x4FF	56 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.