PDF malware analysis — malicious · b6e15fb8086dcaa5

MALICIOUS

PDF

10.4 KB

MD5: fed4d0c61b1f2098888c5c6a8db0c26b SHA-1: 721335a1221496fb635365261282423b3eda277e SHA-256: b6e15fb8086dcaa5eb7a3e777c0eb006b49a9f4277a2b84c427ed430202d79ee

108 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF was flagged by multiple heuristics, including a critical ClamAV detection for obfuscated objects and an ML classifier indicating 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, providing no direct clues about the lure. The overall confidence is high due to the strong technical indicators of maliciousness.

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` `361f8b2e608180763b02db96385d31bda3cdecca245bae817dc7ef0db4d755bc`	pdf-embedded-file	PDF EmbeddedFile object 1 at offset 0x82	13408 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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