PDF / .6_C malware analysis — malicious · 83c2e94566daf08f

MALICIOUS

PDF / .6_C

10.5 KB

MD5: f9712b4aba99fb04c1a117ea315abb2a SHA-1: f21cf9847d847d88c2dd9ef7af09490f0b4c36a3 SHA-256: 83c2e94566daf08f6f9e672bd6477fb95c29c838553e0013f1578dc3cde3acf2

108 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically due to obfuscated objects and an embedded file. The presence of an embedded file and XFA form structures are common delivery mechanisms for malware. The embedded file 'embedded_file_obj0001.bin' is the primary indicator of malicious intent.

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` `50bf651cadcb730ba02c1f86a0cbf5880b54ec7840d4ea87a328740230afa941`	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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