PDF malware analysis — malicious · 36f205d9addc7f19

MALICIOUS

PDF

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

MD5: ffe983c918b0731961c9856cefdfa2f3 SHA-1: 3a78c98fb557dad31846690b28029ea6a58dba1a SHA-256: 36f205d9addc7f19c85f8a91c1d8818db7da5b94ed1b5a3d3fe46599555ed3fc

78 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment

This PDF document was identified as malicious by ClamAV with the signature Pdf.Exploit.Agent-36874. Static analysis revealed the presence of XFA forms and AcroForm buttons with action triggers, common in exploit-laden PDFs. An embedded, decompressed stream artifact suggests the potential for a secondary payload delivery. The document body contains obfuscated text, further indicating 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` `cfdaadedfe78b29d8fb68f37ca4fb8c58d2062564b33d87b2f47f9634cb9ed1a`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1490 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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