MALICIOUS
74
Risk Score
Malware Insights
MITRE ATT&CK
T1204.002 Malicious File
T1059.007 JavaScript
T1566.001 Spearphishing Attachment
The PDF file contains an XFA form with executable scripts, a known vector for delivering malicious content. The 'PDF_XFA_SCRIPT' heuristic firing indicates the presence of risky script execution within the XFA form. This script likely attempts to download and execute a second-stage payload, as suggested by the 'EXTRACTED_FILE_STATIC_TRIAGE' heuristic which flagged obfuscated script indicators and an embedded file. The embedded URL is likely part of this delivery mechanism.
Heuristics 7
-
XFA form contains risky executable script high PDF_XFA_SCRIPTPDF 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.
-
Embedded file low PDF_EMBEDDEDPDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
-
XFA form low PDF_XFAPDF uses XML Forms Architecture — can contain script logic
-
String.fromCharCode low PDF_FROMCHARCODEString.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)
-
AcroForm button with action trigger low PDF_ACROFORM_BUTTONPDF contains a /Btn form field together with a SubmitForm/URI/Launch/JS trigger — this is the building block of fake 'Download' or 'Open' button overlays used in PDF phishing lures
-
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGEOne 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.
-
Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL http://www.xfa.org/schema/xfa-locale-set/2.1/
Extracted artifacts 6
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
embedded_file_obj0041.binc06dcd026a7ea0536b63e07ce688691b585339a3ab7ff59065e546b56308c7bb |
pdf-embedded-file | PDF EmbeddedFile object 41 at offset 0x39F3 | 85 bytes |
embedded_file_obj0042.binb40a217a8d9b8d3671cc3874c550d30941b93ca6dde99995d43921dede579865 |
pdf-embedded-file | PDF EmbeddedFile object 42 at offset 0x3AA5 | 1183 bytes |
embedded_file_obj0043.bin9ff513425aaeb16077bb80572e1b83504c71e9a5ef8505842c483f8300ce61db |
pdf-embedded-file | PDF EmbeddedFile object 43 at offset 0x3CF5 | 1739 bytes |
|
Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact contains 1 eval/decoder/string-building token(s).
|
|||
embedded_file_obj0044.bin3dd68f00f4fcb366a2a3a17c65cb2626eeddf5ea5713302d374310561d810169 |
pdf-embedded-file | PDF EmbeddedFile object 44 at offset 0x40D3 | 144 bytes |
embedded_file_obj0045.bin10c03f88a5f0a0833dc5b2c8ac295b3a3c6f65e23889eb8cc1dc6fe29bf7f275 |
pdf-embedded-file | PDF EmbeddedFile object 45 at offset 0x417F | 77 bytes |
font_00_cff_off00004293.bin062eede2d0cc5d3972869dc7e2f2f9f01d1d1b3756b715c8252f06948ce99ae2 |
pdf-font-stream | PDF embedded font (cff) at offset 0x4293 | 1192 bytes |
Open this report in the interactive analyzer, or submit your own file for analysis.