PDF malware analysis — malicious · 2c19d0fa4690696b

MALICIOUS

PDF

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

MD5: 677b4821d5f166a882bbe95f6c2fef2f SHA-1: 3ac03cc80c146c77c95665a419c38ac1e53892a9 SHA-256: 2c19d0fa4690696be8021f779e4771b746c58b31205c57dbecaea475a371d016

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 an AcroForm button with an action trigger further suggests malicious intent, likely to execute embedded code or redirect the user. An encoded blob was also extracted, which is a common technique for obfuscating malicious payloads.

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` `63a58538c9c47cdfeba43e44be3b6cb3ea957f729c3b39426c479c91b7047908`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1436 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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