PDF malware analysis — malicious · 4ba619421bb56ad1

MALICIOUS

PDF

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

MD5: 8757260d96669b15ad4d77e46609100d SHA-1: 467dc1a34ac9c1f254ced1b7f91b3f478c00da48 SHA-256: 4ba619421bb56ad14325d3910828c0506a0d1ce554372deb162a5086eb0baa37

78 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious File

The critical ClamAV heuristic firing indicates this PDF is recognized as 'Pdf.Exploit.Agent-36874', strongly suggesting it exploits a known PDF vulnerability. The presence of XFA forms and AcroForm buttons further supports the likelihood of an exploit being embedded. While no specific script was extracted, the file's nature points towards a downloader or dropper.

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` `5b713d73ef6efe244adeadeda8504bf1f06f6433399da324d4060a382e559769`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1441 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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