PDF malware analysis — malicious · 44bdd2e6009f18a1

MALICIOUS

PDF

136.8 KB Created: 2011-09-08 05:03:17 Authoring application: FPDF 1.6

MD5: 1ff48a6460fa42f21ccdff7ce8cc1b4c SHA-1: 89ec05abde080565f21cb84ca5c12ec082510158 SHA-256: 44bdd2e6009f18a17256f4bbad4ea7e6e15b3ac272b5b84dc641fd044a1cd400

110 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File

The file is a PDF document detected by ClamAV as Pdf.Exploit.Agent-36874. Static analysis indicates the presence of XFA forms and AcroForm buttons with action triggers, suggesting an exploit attempt. The ML classifier also flagged this PDF with high confidence. The embedded artifact, a decompressed PDF stream, likely contains the exploit code.

Machine Learning

Nyx PDF Classifier malicious score 0.9993

Heuristics 4

ClamAV: Pdf.Exploit.Agent-36874 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36874
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
AcroForm button with action trigger low PDF_ACROFORM_BUTTON

PDF contains a /Btn form field together with a SubmitForm/URI/Launch/JS trigger — this is the building block of fake 'Download' or 'Open' button overlays used in PDF phishing lures
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
`stream_001_off000008ed.bin` `682e7db309292b5bb1a946fbcc01f6a882ac3947aef825fc4b9388aa5662acd1`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1407 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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