PDF malware analysis — malicious · f943a5da9c240195

MALICIOUS

PDF

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

MD5: 58eb3e6ec6a0c649e4bdb18c52708ab9 SHA-1: 25d8a6877a45775e2faf9b61e3e1db7dd417f208 SHA-256: f943a5da9c240195bfc79af3cd35412f45b79cf15f4c9389238da9b8e3152cc2

78 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File

The PDF was flagged by ClamAV as Pdf.Exploit.Agent-36874, indicating a known exploit. Static triage also identified a suspicious extracted artifact, a long encoded blob within a decompressed PDF stream. The presence of XFA forms and AcroForm buttons further suggests an attempt to embed and trigger malicious actions within the PDF structure.

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` `fc3e0ecfd95522a47767134e10f8d04abf1085867b1051d745a55be49b4af4e7`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1435 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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