PDF malware analysis — malicious · 3bb2c7577876c2f4

MALICIOUS

PDF

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

MD5: 6686638057718a24cd4444b464605fb9 SHA-1: 0976d2516c79b0324b302102e7431c7a43619945 SHA-256: 3bb2c7577876c2f4d008065872516c21117808423930b5cb042c131424dd8e1e

78 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The critical ClamAV heuristic identified the file as Pdf.Exploit.Agent-36874, indicating a known PDF exploit. The presence of XFA forms and AcroForm buttons further supports the likelihood of a malicious PDF designed to trigger an exploit. While no specific script was extracted, the exploit likely leads to the download and execution of 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` `8bd297b6fbbf516d21886fc88fa533dc4def6d742670d0a2b828d8cb4a6d5506`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1467 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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