PDF malware analysis — malicious · 010540f31f8c6042

MALICIOUS

PDF

18.3 KB

MD5: b53fce0448ffd8771029483c75efa6de SHA-1: 2486be958a72c550ba6d0da97d9f94e8df5e2972 SHA-256: 010540f31f8c60424ba6ba27b30a5e004af9be8c3c4ce207cd89dd93343d9b67

180 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious File T1566.002 Phishing: Spearphishing Attachment: Phishing

The PDF file contains embedded JavaScript, indicated by the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic and the 'embedded_pdf_script_00000329.bin' artifact. The ML classifier and ClamAV detections strongly suggest malicious intent, with ClamAV identifying it as 'Pdf.Exploit.Dropped-78' and an extracted artifact as 'Pdf.Exploit.Agent-36809'. The embedded script, though truncated, appears to be part of an XFA form and likely attempts to download and execute a secondary payload, a common technique for malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
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.
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
Embedded URL info EMBEDDED_URL

One 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-template/2.5/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_pdf_script_00000329.bin` `4a95c4505698cdb0fd4012741568d1df81f7c1817ad016e05828b19abf4cdcdd`	pdf-embedded-script	PDF raw stream script payload at offset 0x329	17973 bytes
Detection ClamAV: Pdf.Exploit.Agent-36809 Obfuscation or payload: unlikely

Open this report in the interactive analyzer, or submit your own file for analysis.