PDF malware analysis — malicious · 1e744a9dc749fb22

MALICIOUS

PDF

9.5 KB

MD5: 7034b60f513e4c1882430f8e53430ee2 SHA-1: 2ac1ad798ce59c9e5875be2270a69a841c9ea478 SHA-256: 1e744a9dc749fb221ae5218a4cfc5906169c089e1ea9eb34eed334fb703333c0

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded and obfuscated JavaScript, indicated by the PDF_EVAL and PDF_XFA_SCRIPT heuristics. The deobfuscated JavaScript is likely responsible for downloading and executing a second-stage payload. The presence of embedded files and script payloads points to a common delivery mechanism for malware.

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` `5f82c562b4d23135a30459876d6be12369a30a59aa8cc62b30f18437865d1ab4`	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` `cdf4a87c0ef5c838fffd1de7425c7c0ac69e417e09e5756f7989348f204abe7a`	deobfuscated-js	PDF JavaScript deobfuscation pass	1967 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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