PDF malware analysis — malicious · f48e551cfe4c39ae

MALICIOUS

PDF

103.3 KB

MD5: 69abc4eb384fc6efe640cdaf4ab17f16 SHA-1: fb0b255e9a5cbad50e7cee2618f431522ccfb6bd SHA-256: f48e551cfe4c39aeef28b5b0cb86277f99cd8c7c3d5d22c3fe9cdc45d3dad6ec

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains multiple indicators of malicious activity, including embedded files and risky executable scripts within XFA forms. The unescape() call and ASCIIHexDecode filter suggest obfuscation and exploitation attempts. The primary malicious component appears to be an embedded script payload, likely designed to execute further malicious actions.

Heuristics 7

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.
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (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.
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
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_obj0008.bin` `ec9dc414c57b20dd31c0acc03a830c230e00f4f2bde581b77caddc2fe1eeb346`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xE2	14998 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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