PDF malware analysis — malicious · 1d5ac1d38e7c4bb2

MALICIOUS

PDF

7.6 KB Created: 2012-04-17 19:53:38

MD5: d31061da4b6091ddaea38c94bdbdb81f SHA-1: a8846c21c5a2ac03e82d852dff93c67f1eee3eb7 SHA-256: 1d5ac1d38e7c4bb22c920b96989fb6269687776b0163138becfcd73150305f3f

128 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious File T1566 Phishing T1566.002 Spearphishing Attachment

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating it contains an exploit. The 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic suggests the presence of a script designed to execute a secondary payload. The embedded file artifact further supports the delivery of malicious content. The exact nature of the exploit or payload is not detailed, but the overall pattern points to a malicious PDF dropper.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Exploit.Dropped-156969-1 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-156969-1
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
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0008.bin` `1e6b32e7ccc063aa15519c108a236ab39948ccd3287ca71d982a6cb7be518680`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xBAF	7179 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 long base64-like blob(s).

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