Malicious PDF — malware analysis report

Static analysis result for SHA-256 e87a47829b7f9917…

MALICIOUS

PDF

33.8 KB Authoring application: Pdftk
MD5: 14c01ca9bd6f67e0f9b07a5cb9e04e77 SHA-1: 6683b1653ed24d04eedb18ce4e49a2b67d887503 SHA-256: e87a47829b7f991748023cd056fd8160068f98a0ae869587152c5785a53308f3
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. The document body, though partially corrupted, contains references to nursing and medical terms, potentially as a lure. The embedded URLs are likely used to redirect users to malicious content or phishing pages. ClamAV also detected this as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://meridaanderson.com/uploads/1/3/0/5/130590399/wanazaju.pdf
    • http://suekennedycelebrant.com/uploads/1/3/0/6/130639561/wudibepux.pdf
    • http://hawaiieventlighting.com/uploads/1/3/0/6/130639542/0b6b836.pdf
    • http://kylewidner.com/uploads/1/3/0/8/130814729/6337759.pdf
    • http://mackenzieemievents.com/uploads/1/3/0/5/130588575/3558896.pdf
    • http://bernardobellostudio.com/uploads/1/3/0/5/130551526/130551526.html#priority+nursing+intervention+for+severe+preeclampsia

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001039.bin
0bbd9747c6a8824a63b6538d83030dc70cecfd0bc17e759fe88f7edfa237e45f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1039 7492 bytes

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