PDF malware analysis — malicious · 515cad0ae38cd46e

MALICIOUS

PDF

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

MD5: 6bf3438174597cc44f2af76d9f3cbebf SHA-1: abcca7b244a9671e17375054dea3f1e4af21f92a SHA-256: 515cad0ae38cd46e26b16c2d4845619d86dbd956ba61625595f0a39a4e5bb33e

78 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment

The file is identified as a malicious PDF by ClamAV with the signature Pdf.Exploit.Agent-36874. Static analysis revealed an XFA form and an AcroForm button with an action trigger, indicating potential exploitability. An embedded, decompressed PDF stream was also found, suggesting the document is designed to download and execute a second-stage payload.

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` `50670601ffd1bfe6528f0cafac044ed645458de95f71f4e7b5c2019fd03dc123`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1483 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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