PDF malware analysis — malicious · 7db15b72c1ed173d

MALICIOUS

PDF

9.5 KB

MD5: 477df4d6a96161241269c2efbdadcd1a SHA-1: 9bfc0377d645c782f193813924f99a21b9f6c061 SHA-256: 7db15b72c1ed173d485ef2fdd41e35620afa2aea94944fc2f71eda3ead4e2eb3

126 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains embedded XFA forms with executable scripts, indicated by the PDF_XFA_SCRIPT and PDF_EMBEDDED_SCRIPT_PAYLOAD heuristics. Analysis of the deobfuscated JavaScript reveals it is designed to download and execute a second-stage payload. The PDF_EVAL heuristic also suggests the use of JavaScript eval functions for code execution. The presence of embedded files further supports the malicious intent.

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` `92104b92b1a9b10860a06ac9722c0a2f39445c245eedfc418be23f89490f7792`	pdf-embedded-file	PDF EmbeddedFile object 41 at offset 0x52	1165 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`deobfuscated.js` `f79c9c5efa60e423c5d30f7f8c5fb1e49f8c5dde8c9f056527e8f1009dc805d5`	deobfuscated-js	PDF JavaScript deobfuscation pass	2143 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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