PDF malware analysis — malicious · 913fd80aa085de00

MALICIOUS

PDF

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

MD5: 53c28b8e48014b6658a97e5a0874ae12 SHA-1: 91f35566d8cc93d084236d1a9d2ed138e4945182 SHA-256: 913fd80aa085de00c1716fda4b938ae42cfb42e494830bbba3d382d939ce4fb2

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 AcroForm buttons further suggests the document is designed to trigger an exploit. The extracted artifact 'stream_001_off000008ed.bin' likely contains the exploit code or payload. The document body is heavily obfuscated and does not provide clear user-facing content, reinforcing the malicious intent.

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` `7c350b5c894e1d431acba9491935b98a8e95a94266e0a31fa37e7cbc80535912`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1422 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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