MALICIOUS
76
Risk Score
Malware Insights
MITRE ATT&CK
T1204.002 Malicious File: Malicious File
This PDF sample was flagged as malicious by an ML classifier with high confidence. Static analysis revealed embedded JavaScript and a potential Flash object, indicated by the 'xQetldvH.swf' string. The presence of ASCIIHexDecode filters with exploit indicators further suggests an attempt to obfuscate malicious content. The embedded JavaScript and potential Flash object are likely used to deliver a secondary payload or exploit a vulnerability.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEXHex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
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JavaScript action low PDF_JAVASCRIPTPDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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Embedded file low PDF_EMBEDDEDPDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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