PDF malware analysis — malicious · a6a1f2fbffb22469

MALICIOUS

PDF

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

MD5: 97a9a4e193e2a9e22b51ceb44157970e SHA-1: 2122674eca25b6c3ae7516695a850cff6a7a2f9d SHA-256: a6a1f2fbffb22469a136d36da8fe9d64951c40d7f3ffdb1fd3542fae28c5345d

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 and an ML classifier. The presence of XFA forms and AcroForm buttons suggests an attempt to exploit PDF vulnerabilities. The embedded artifact 'stream_001_off000008ed.bin' likely contains the malicious payload. The detection name 'Pdf.Exploit.Agent-36874' indicates a known exploit targeting PDF documents.

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` `58a2a0f43a6317f4618486c046f243850e6f3c6c1331ce0e527d4aa835882d4c`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1428 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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