PDF malware analysis — malicious · 48c428c1cde58199

MALICIOUS

PDF

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

MD5: 818eef0e9ba94e7943dd30c5c9645d25 SHA-1: d4ebcd14aa8da4d12f84bd2960b3d5f417376352 SHA-256: 48c428c1cde581992df4be52f57727a882ed825a30cd90e62eac08aa4aa1187f

78 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link 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 the document is designed to trigger an exploit. The decompressed stream artifact likely contains the malicious payload or exploit code.

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` `99827b5b8b09e6a5391f8175aebc2927f4180486c616eec5bc66671d3b5e9adc`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1414 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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