Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b559494f7eaa601…

MALICIOUS

PDF

43.5 KB Authoring application: Pdftk
MD5: 813356272ee005ba553a779ea3f742e1 SHA-1: 1f549d93fde70d711114c3bfc70f509c94b35ae0 SHA-256: 2b559494f7eaa601a7a95fb79f8f9bec25a89b8c59a9424f0c08e42b5fdf0d3c
120 Risk Score

Malware Insights

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

The PDF contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The embedded URLs point to various domains, suggesting a link farm designed to redirect users. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports the phishing and redirection intent. No scripts were extracted from this sample.

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://tofubox.shop/uploads/1/3/0/5/130588583/68b018e040600.pdf
    • http://falconfoodmart.com/uploads/1/3/0/3/130313529/fde2f41be4ce.pdf
    • http://mydoodlebugs.com/uploads/1/3/0/6/130603865/2718218.pdf
    • http://mysoundcollective.com/uploads/1/3/0/2/130272240/130272240.html#chief+architect+x10+full

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001000.bin
969187fe5017db0004ee97918fa3b7eb87742d5f2d16f31e258319898c420919		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1000 9404 bytes

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