PDF malware analysis — malicious · 982159f15c051967

MALICIOUS

PDF

4.1 KB

MD5: 70be809e09a1d9c505f0dc1702dec887 SHA-1: fe00ace8f16c4777bfa0b6c1f970adef47ac83ec SHA-256: 982159f15c051967b0f58f0c85110aefb916ca0ef305e9830028a6cd72dd3139

110 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains embedded JavaScript, indicated by the PDF_EMBEDDED_SCRIPT_PAYLOAD and PDF_XFA_SCRIPT heuristics. The JavaScript is likely designed to download and execute a second-stage payload, as suggested by the PDF_EVAL firing and the suspicious extracted JavaScript artifact. The XFA form structure further supports the exploitation of PDF vulnerabilities.

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_off00000289.js` `00710bacf1ef0dc267a418e2766e7543d771439e58cc75c7cf7347da19bcc0f2`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x289	10333 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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