PDF malware analysis — malicious · 1cac8cdc8b2f631c

MALICIOUS

PDF

10.4 KB

MD5: ec4388a9ea47948e46e829b1233fe591 SHA-1: b658a0297d43546f44f71485e9821698dd4f347e SHA-256: 1cac8cdc8b2f631c1dd08dc60c410295e7262fce7e1f714d50da3f6837095e52

108 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for an obfuscated object and an ML classifier indicating maliciousness. It also contains an embedded file, suggesting it's a dropper or exploit document. The presence of an embedded file and the obfuscated nature point towards an attempt to exploit 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` `70b39c245a473e6f28e6ce1a679922bcd70ee77f26360c74c95eea2bc34272b4`	pdf-embedded-file	PDF EmbeddedFile object 1 at offset 0x84	13408 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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