PDF malware analysis — malicious · 4712a5305570ee1a

MALICIOUS

PDF

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

MD5: 75a6d8bf9b7a1503ae00945f6ea6c43e SHA-1: 8484a4f02f9ef081b9b0bce856eb9d7a8c3aa686 SHA-256: 4712a5305570ee1a7f26d048118bda971bed66cd7a817624ce48223536ce08bc

78 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The critical ClamAV heuristic firing indicates this PDF is recognized as a known exploit, specifically 'Pdf.Exploit.Agent-36874'. The presence of XFA forms and an AcroForm button with an action trigger further suggests a malicious PDF designed to exploit viewer vulnerabilities. The embedded binary artifact, 'stream_001_off000008ed.bin', likely contains the exploit code or a secondary payload.

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` `834b44f4ae62a07f0ad1946d32f40ccf1e8c3768c24e5015b631ece30c067c8e`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1442 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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