Malicious PDF — malware analysis report

Static analysis result for SHA-256 3697a93349fe5c1f…

MALICIOUS

PDF

37.1 KB Authoring application: pdf-parser
MD5: a09d70b9b9bb5803a49720cea23943d5 SHA-1: 8cdc3ed86007c5e5e309ba5325da6425adeb9c08 SHA-256: 3697a93349fe5c1f50eb3712e01198a94113690813dc7a3b7952183c826654d9
150 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to other PDF files hosted on various domains. The heuristic PDF_SEO_LINK_FARM indicates a mass external PDF link farm, and ClamAV detected it as Pdf.Phishing.TtraffRobotInstall. The embedded URLs likely serve as a lure to a phishing or malware distribution site.

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://ladykays.com/uploads/1/3/0/2/130274097/tanosefukiguluzukaw.pdf
    • http://healthyprinting.biz/uploads/1/3/0/6/130621850/sugov-jajuwoxaravum.pdf
    • http://www.nicolettemurin.com/uploads/1/3/0/7/130775252/410260.pdf
    • http://sixstepscloserstudios.com/uploads/1/3/0/4/130476050/dcbfdbf26b7e4a0.pdf
    • http://josiebryant.com/uploads/1/3/0/8/130813819/jidepa.pdf
    • http://www.wickedmystickmuzick.com/uploads/1/3/0/7/130775025/9bd5caf8df.pdf
    • http://frankhatesyou.org/uploads/1/3/0/2/130272424/8490338.pdf
    • http://newzealandlgbtiaward.com/uploads/1/3/0/5/130589191/davowapat.pdf
    • http://www.windrushmovement.org.uk/uploads/1/3/0/5/130588263/7147106.pdf
    • http://nextcareermoves.com/uploads/1/3/0/3/130379427/446892.pdf
    • http://www.magicalgourmet.com/uploads/1/3/0/5/130551000/130551000.html#how+do+i+know+if+it%27s+viral+or+bacterial+pink+eye
    • http://sixstepscloserstudios.com/uploads/1/3/0/4/130476050/dcbfdbf26b

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003c5e.bin
75bbd8ac2fe207744efdd4b664275bbf7d68a51e3b006b2ae732c3537f0a1315		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3C5E 7512 bytes

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