PDF malware analysis — malicious · 441aa8f2d1b3438c

MALICIOUS

PDF

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

MD5: 3c33133583f2067781f32f295ffdddf6 SHA-1: 9fdfd0b8b55095d0c7ec75aa4b8727cca567519f SHA-256: 441aa8f2d1b3438cbc4a2530b5d3a4b56518a269fe725d088070534f5703c0f0

78 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File

The file is identified as malicious by ClamAV with the signature Pdf.Exploit.Agent-36874. Static analysis revealed the presence of an XFA form and an AcroForm button with an action trigger, both common components in PDF exploits. An embedded, decompressed PDF stream was also detected, suggesting the potential for further malicious content or exploit code delivery.

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` `86969c5033620af5351991ff1f7b62178f3b4126f88b3c3c9cc8c703eeae6d07`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1439 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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