PDF malware analysis — malicious · 2cec2e3c095c5630

MALICIOUS

PDF

6.3 KB Created: 2013-09-26 19:05:25

MD5: c67761492099d6f4e05c169f177fed50 SHA-1: 10bf4b0bf4bbd0335e2218b30d0f4bfe524acab5 SHA-256: 2cec2e3c095c5630b7baccbb058a164ed8b3427bfd8b218f53d1f0dae765708d

68 Risk Score

Malware Insights

MITRE ATT&CK

T1557 Adversary-Controlled Active Content T1204 User Execution T1204.002 Malicious File

The PDF was flagged by a machine learning classifier as malicious with high confidence. Static analysis revealed an embedded file and an embedded script payload within a PDF stream. The presence of these elements, particularly the embedded file, strongly suggests an attempt to deliver a secondary malicious payload to the victim.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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_obj0010.bin` `d9a51239aebbde1a311723b1c4b3015343acca5695c2954c895486cb574799e6`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0x929	5829 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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