PDF malware analysis — malicious · 448153c4cdea0fac

MALICIOUS

PDF

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

MD5: 7e8906d4a5c6a049e4bf75acc94b1774 SHA-1: f5998600642c4811b7467ece9adeea152cc8d7a4 SHA-256: 448153c4cdea0facc42abe107582d13698fad4ee66d141906840181ef3c15ca1

78 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment

The critical ClamAV heuristic firing indicates this PDF is recognized as Pdf.Exploit.Agent-36874, a known exploit. The presence of an XFA form and an AcroForm button with an action trigger further suggests malicious intent, likely to execute an embedded exploit. The extracted artifact 'stream_001_off000008ed.bin' is a suspicious component that warrants further investigation.

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` `e4fea37468e36c4c91860d5ded755b3903496cddaabe8052a84cc0c89dc64516`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1427 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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