PDF malware analysis — malicious · e9ee2ecb6f2626cb

MALICIOUS

PDF

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

MD5: a8fc8feee1db8f61e112ff295b7e6a79 SHA-1: 48fb5f9670a6a3b118675c87b35df52c140544ac SHA-256: e9ee2ecb6f2626cbd20e5b7f76c7a97f5f02497706ff258d1a260dc746513b19

108 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment

The file is a PDF document identified as malicious by ClamAV with the signature Pdf.Exploit.Agent-36874. ML classification also strongly indicates maliciousness. The presence of XFA forms and AcroForm buttons suggests an attempt to exploit PDF viewer vulnerabilities. The document body contains obfuscated text, further indicating a malicious payload rather than legitimate content.

Machine Learning

Nyx PDF Classifier malicious score 0.9993

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` `64c7962ea8f726bbb10eaac527402ad01927c8825e195299989b622a199ea080`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1449 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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