Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bddc350281d45ee…

MALICIOUS

PDF

29.3 KB Authoring application: Mobipocket Creator
MD5: 4a203de830d744561fdd0b8005b23bc7 SHA-1: cf8db86deb893b4894a3553327588a02721c71c6 SHA-256: 3bddc350281d45ee35a9e9cc0b29ba26c048bbe9b1b9b9e3472d395a1ca5bb11
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents hosted on various domains. This behavior is indicative of a link farm, often used for SEO manipulation or to distribute malicious payloads. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malicious intent. No scripts were extracted, limiting the analysis of direct execution capabilities.

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://dreamfarmeracademy.com/uploads/1/3/0/4/130436127/5452468.pdf
    • http://yissilmissil.com/uploads/1/3/0/3/130313564/899263.pdf
    • http://bestself.studio/uploads/1/3/0/5/130540814/nukireke.pdf
    • http://michaelshusko.com/uploads/1/3/0/6/130605519/130605519.html#engineering+economics+journal

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000f4d.bin
2f8f8cfb1387319f5009f56125e334fd64cd170263aa6001e27b042affabd880		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D 7680 bytes

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