PDF malware analysis — malicious · 8d6726eb23beaf3d

MALICIOUS

PDF

4.1 KB

MD5: 78a061495bf3902d83bce157f0c8adf8 SHA-1: 615098d7bc8592420196d852370f19948f2a3495 SHA-256: 8d6726eb23beaf3db7e9f678bb9f267360e9c022e0d10915e6cc7748885c8c94

110 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File T1566.003 Spearphishing Attachment

The PDF file contains XFA form elements and embedded JavaScript, indicated by the PDF_XFA and PDF_XFA_SCRIPT heuristics. The embedded JavaScript, extracted as 'stream_000_off0000027f.js', is likely responsible for downloading and executing a second-stage payload. The PDF_EMBEDDED_SCRIPT_PAYLOAD and PDF_EVAL firings further support the execution of malicious code within the document. The lack of specific indicators for a known family leads to an 'unknown family' classification.

Heuristics 5

XFA form contains risky executable script high CVE related PDF_XFA_SCRIPT

PDF embeds an XFA form whose script block contains exploit, submission/launch, or shell-execution primitives. Ordinary LiveCycle print/update scripts are left as generic XFA/JS signals unless stronger behavior is present.
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD

PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
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
`stream_000_off0000027f.js` `596ad266bdb99d7f6fa9f23cc9daac59884c4c2544b72166dc6edca15a7df443`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x27F	10329 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 5 long base64-like blob(s).

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