PDF malware analysis — malicious · b630614f62b04840

MALICIOUS

PDF

105.6 KB

MD5: 9662ecc7fd544bd5d104f55663b5f7cd SHA-1: 960f6288b39e520bcb0cbb41c320c690c9535e45 SHA-256: b630614f62b04840a7cce22c1e014061863b680fe4c744ebf662fd32163e331b

138 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1027 Obfuscated Files or Information T1566.001 Spearphishing Attachment

The PDF file contains embedded content and utilizes XFA forms with executable scripts, indicating a malicious intent to exploit vulnerabilities. The presence of PDF_UNESCAPE and PDF_FILTER_HEX heuristics suggests obfuscation and potential exploit code. The embedded script payload is the primary indicator of malicious activity, likely serving as a downloader for further stages.

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` `ea46bb55224443d3e5f0f50e65b81028180365e4084e8ae172d022d283e63153`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xE2	15334 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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