PDF malware analysis — malicious · c318fbb07f7ef843

MALICIOUS

PDF

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

MD5: 43a17de244b78d74bf9a4779817dfc85 SHA-1: af96886417cb51afdbe1e1eb378bdad175b2ac75 SHA-256: c318fbb07f7ef8436f40e56c2ab98b63dcd39c60e1317234330a0813ce59a72e

78 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious File

The file is a PDF document identified by ClamAV as Pdf.Exploit.Agent-36874, indicating it exploits a known PDF vulnerability. The presence of XFA forms and AcroForm buttons with action triggers further suggests malicious intent, likely to execute arbitrary code upon opening. No scripts were extracted, but the core functionality appears to be exploit-based delivery.

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` `6ab2632e2986f602206691161965b17ed75e8e585d5c1c16c16f1980c0d8aeff`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1476 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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