PDF malware analysis — malicious · d2b7b3943b422469

MALICIOUS

PDF

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

MD5: 7811a4882e062dc027d4d3ae136ee9ed SHA-1: c9fb9ec1d3018bb21b6660f3445ba271c900c025 SHA-256: d2b7b3943b4224699cfe54b44e90810d906231d15740f1ab0ade3d8d7a0a6211

78 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File

The PDF document was flagged by ClamAV as Pdf.Exploit.Agent-36874, indicating a known exploit. Static triage also identified a suspicious extracted artifact, a long encoded blob, which further supports the malicious nature of the file. The presence of XFA forms and AcroForm buttons suggests an attempt to embed interactive elements that could be leveraged for exploitation.

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` `0fd7177980559b2ff0b5084e580023644262119555d1d86fda9901d1c19e95db`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1445 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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