PDF malware analysis — malicious · 046f1348c9438dac

MALICIOUS

PDF

11.8 KB

MD5: 4996aa6bb3124ebd0580b77839d65f4d SHA-1: fcd644f2b80f67e68e28977cf0013e0bbcb2292c SHA-256: 046f1348c9438dac41cca6489e170d4bdba485a293756d999b84dc9322b06145

118 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF sample was flagged by multiple heuristics, including ClamAV detection as Pdf.Exploit.Dropped-78 and a high ML score, indicating it contains an exploit. The presence of an embedded script payload and an embedded file suggests the PDF is designed to execute malicious code upon opening, likely downloading and running a secondary payload. The benign URLs extracted do not appear to be related to the malicious functionality.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 6

ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
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
Embedded script payload in PDF stream low 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.
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.
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://ns.adobe.com/xdp/
- http://www.xfa.org/schema/xfa-template/2.5/
- http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0008.bin` `84bab610bc7c8708378456b4e7357c5db51057142000f8dccc4d53bb81172330`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC8	11338 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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