PDF malware analysis — malicious · 43229084f1d9f53d

MALICIOUS

PDF

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

MD5: 78046224b9117e87293b91ef96f6a6d6 SHA-1: aad48ee55ac65530dea2932e3117f3fabd5e6457 SHA-256: 43229084f1d9f53d55315ea890ca5f1af6f922ff04798e437635a07d4ce3889f

78 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File

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 AcroForm buttons further suggests an attempt to leverage PDF features for malicious purposes. While no specific script was extracted, the combination of these factors strongly points to a malicious PDF designed to exploit a vulnerability and likely download a second-stage 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` `60320b3faae2bc6e8a4bb037b2f7040a6ce0dccef538d7d67e4c28d4ebae143d`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1449 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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