PDF malware analysis — malicious · 4a4fb1a97322521f

MALICIOUS

PDF

10.5 KB

MD5: fb52e297ff586de58986590475c0b160 SHA-1: 127e1ea6c7cfbaabe2174542729911bcf7b0b522 SHA-256: 4a4fb1a97322521fe065d2d9a697bc04355ccb1a5d005ba21c20c0ca65a0b026

108 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The PDF sample was flagged by multiple heuristics, including a critical ClamAV detection for obfuscated objects and an ML classifier indicating high maliciousness. The presence of an embedded file, 'embedded_file_obj0001.bin', suggests it's a dropper or exploit container. The document body is heavily obfuscated and unreadable, further supporting the malicious intent. The primary attack vector appears to be exploiting PDF vulnerabilities to deliver a secondary payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

Heuristics 4

ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
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
`embedded_file_obj0001.bin` `7554eea02ba3dd857233235852dc9a8694c4b609a889321dc9e5be6447430911`	pdf-embedded-file	PDF EmbeddedFile object 1 at offset 0x80	13408 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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