PDF malware analysis — malicious · 2636769aabeeeb4b

MALICIOUS

PDF

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

MD5: 6b2cc996e7c84e48b4a0e98cbb057e02 SHA-1: ce507191cb24dd445c9869e434399808409718dc SHA-256: 2636769aabeeeb4b4af7215cd0e19f3e3974e549a5f3953e3d8de788c5a420c8

78 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious File

The file is a PDF document identified by ClamAV as Pdf.Exploit.Agent-36874. Static analysis revealed an XFA form and an AcroForm button with an action trigger, indicating a potential exploit. A suspicious, long encoded blob was also extracted, suggesting the presence of malicious content designed to be executed by the PDF viewer.

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` `04b4fec52e66bbe8bff736562631819dd412d54df731cad9bb8364ad56434593`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1415 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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