Malicious PDF — malware analysis report

Static analysis result for SHA-256 df14d15f0edd4242…

MALICIOUS

PDF

7.9 KB Created: 2018-09-20 15:53:02 +03:00 Authoring application: dompdf + CPDF
MD5: 651c3af14ad3f6789e2854d8177909ba SHA-1: 7c17184f1e2a880298f567ac30aa34d2a5b3a9fe SHA-256: df14d15f0edd4242a56cc36b87dca6058a074165942e290924ca8d27909f41cf
72 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The file is a PDF document that contains a lure for a fake invoice or payment, as indicated by the SE_INVOICE_LURE heuristic. It embeds a URL that leads to a suspicious domain, identified by the PDF_URI heuristic. ClamAV also detected this file as Pdf.Dropper.Agent-7313947-0, confirming its malicious nature. The embedded URL is likely intended to download a second-stage payload.

Heuristics 5

  • ClamAV: Pdf.Dropper.Agent-7313947-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7313947-0
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://criamaiscomunicacao.com.br/61311RYE/com/Commercial

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_000_off00000268.bin
4e4ecc9e591933e3f4b30c2184f108a91274bbf60297e59a1e4a9a01b149ea24		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x268 9570 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 16 long base64-like blob(s).

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