PDF malware analysis — malicious · d5022dc8acfdd7ac

MALICIOUS

PDF

14.6 KB

MD5: ab8ce08e57ead7d019e125e29bec4474 SHA-1: cbc5bfa3c2b068cd19bfaf3ef6c8dfd24879ea9f SHA-256: d5022dc8acfdd7ac6f04a4825979a5fadda181d5695a19e949a461c1a98db4ce

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment

This PDF file was flagged as malicious by multiple engines, including ClamAV, which identified it as Pdf.Exploit.Dropped-78 and Pdf.Exploit.Agent-36809. The presence of an embedded script payload and XFA form suggests an exploit is being leveraged. The embedded URL, while seemingly benign, is part of the document's structure and may be used in conjunction with the exploit.

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` `16fc4c23cdddb2d8811b3eef84e75ddb70fe41045495588b2791727e67a8ee34`	pdf-embedded-script	PDF raw stream script payload at offset 0x329	14254 bytes
Detection ClamAV: Pdf.Exploit.Agent-36809 Obfuscation or payload: unlikely

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