PDF malware analysis — malicious · d0e33ba517b18bf1

MALICIOUS

PDF

9.5 KB

MD5: 5570253865a0afc97cbc81f08dc48594 SHA-1: 3008fda2ebdea0f47e3cabc579ed9bc022dab15e SHA-256: d0e33ba517b18bf1f7503274c6f51f807f3586491e174af9edfa5fd9668dc0df

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 Scripting: JavaScript T1204.002 Malicious File: Malicious JavaScript

The PDF file contains high-severity heuristics for XFA forms and embedded script payloads, indicating malicious intent. The deobfuscated JavaScript likely attempts to download and execute a second-stage payload. The presence of XFA forms and embedded scripts points to a delivery mechanism often used by various malware families.

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.
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.
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
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules. (matched inside decoded stream)
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0041.bin` `cc30fb30b7ea936d9cd4e4dde056df6c85cfadc447148725e69b88c23f05f667`	pdf-embedded-file	PDF EmbeddedFile object 41 at offset 0x52	1163 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`deobfuscated.js` `4711655fbf2b5bd71e56d97afd1057d0ea74613c037d1f39c0de9471e9f01d2b`	deobfuscated-js	PDF JavaScript deobfuscation pass	2147 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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