PDF malware analysis — malicious · 20dd8bb40b45e880

MALICIOUS

PDF

12.0 KB

MD5: 29496d73c428bfe5a32a5890196ca6f5 SHA-1: 14a9a56f92def44bc3bac86365a638ec504d3b85 SHA-256: 20dd8bb40b45e880a9eaff55f76ed3e9bc07ffa5f78ddac42e9960bd15894be1

130 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment

The file is identified as a malicious PDF by ClamAV and an ML classifier, indicating it's designed to exploit vulnerabilities. The presence of PDF_FILTER_HEX with exploit indicators and an embedded file further supports this. The ML classifier's output of 0.999985 suggests a high likelihood of malicious intent, likely to download and execute a second-stage payload.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Exploit.Dropped-90 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-90
ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX

Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
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
PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED

The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PSSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0001.bin` `b6fc7e09d3e2d8cf5203bdf7de60234d80b0ef83872101499038fb55ee8661cc`	pdf-embedded-file	PDF EmbeddedFile object 1 at offset 0x5A	1874 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.