PDF malware analysis — malicious · 844f208a64f5844d

MALICIOUS

PDF

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

MD5: 3fe27d825d09c9ad5034fa6f228269f1 SHA-1: a2707375c6f660dbf210265e9137090aeb9db8e1 SHA-256: 844f208a64f5844d2be760a7a5157691195b73ad89f6ef4f85aa43dbc4b0fb5b

78 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious File

The PDF file was detected by ClamAV as Pdf.Exploit.Agent-36874, indicating it contains an exploit. The presence of an XFA form and an AcroForm button with an action trigger further suggests malicious intent, likely to execute embedded code or redirect the user. The decompressed stream contains a long encoded blob, typical of exploit payloads.

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` `ea8252c67f6114fcecf895f6035ca08449dc3da58da8470f9f95f54477de3ee1`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1504 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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