PDF malware analysis — malicious · efd506dd698c257a

MALICIOUS

PDF

105.5 KB

MD5: 655fff89a59dccbfd3545ce093ba105e SHA-1: 5500551a6e1dba47dbeb7beccfa507b066c3e5a1 SHA-256: efd506dd698c257a02adcd7386a20b02291baf84a2575ee816fe383a449863d8

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains XFA forms and risky executable scripts, indicated by high-severity heuristics like PDF_XFA_SCRIPT and PDF_UNESCAPE. These elements likely work together to decompress and execute an embedded script payload, which is further suggested by the 'Suspicious extracted artifact' heuristic. The embedded file 'embedded_file_obj0008.bin' is the likely target of this execution chain.

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` `7b7f060204f190fa7f9820aec74cc86f39b6c3397b255a1ef67675e8b99b6827`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xE2	15322 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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