PDF malware analysis — malicious · a8d9922cfc916973

MALICIOUS

PDF

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

MD5: 6864857b9c0935d52929167ac4757861 SHA-1: 8778de35ecc794dbcf88be6890e03ed478931cf9 SHA-256: a8d9922cfc9169734d296da8ce303e7fac299dfc59e0f1710462c7f817f277d4

78 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The file is a PDF document identified by ClamAV as Pdf.Exploit.Agent-36874. It contains XFA form elements and an AcroForm button with an action trigger, suggesting it is designed to exploit a PDF vulnerability. An embedded, decompressed stream artifact was also found. The exact exploit mechanism is not fully detailed, but the presence of these elements strongly indicates a malicious intent to execute code upon opening.

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` `e4a59e18775f4118397162dfcf2c21b1847a9c33c0658484912b9ebe8a90a584`	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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