PDF malware analysis — malicious · 38714979847ef161

MALICIOUS

PDF

10.5 KB

MD5: 335d8f8257b38cb380262d411d82f910 SHA-1: c728dbad355507488c9909b31d70360a30de747d SHA-256: 38714979847ef1616f2c8eef6caafa3bc3f734cf4abadfe8876522703eacb083

108 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious File

The file is a PDF document 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 further suggests malicious intent. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall indicators point to an exploit attempt.

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` `b1975188d9124636bb91e0810b763e3f66f798fa03c9aa50fd66d2da0be5e58b`	pdf-embedded-file	PDF EmbeddedFile object 1 at offset 0x88	13408 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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