PDF malware analysis — malicious · 43524f25639c24dd

MALICIOUS

PDF

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

MD5: 5a7df2be72bd8a49baa7b4937fa2a930 SHA-1: ed687b4b5a0f50531804fb70d2f7f962c2544a17 SHA-256: 43524f25639c24dd34ddb22d806a0381f583458fc50c59a6524ed12e6578e7d6

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 likely exploits a known PDF vulnerability. The presence of an XFA form and an AcroForm button with an action trigger further suggests malicious intent. The document body contains obfuscated text, typical of exploit-laden PDFs, and a suspicious extracted artifact was also noted.

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` `c40aa71f8b214cfa13a61658744dcefe1eec5e53ae67ced66b702e44ff6da262`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1386 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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