Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a79144d10e4822a…

MALICIOUS

PDF

36.9 KB Authoring application: Pdftk
MD5: d8c7b6602c08b99c35c1750af2158a3d SHA-1: f39927d881e5d7f5dc90c7643b6abc8810440a5a SHA-256: 9a79144d10e4822a2dd368d10c0e3be16ac49abf8b3926408f7355c46c17c41f
150 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 files hosted on various domains. This technique, identified by the PDF_SEO_LINK_FARM heuristic, is often used for SEO manipulation or to distribute malicious payloads. The ClamAV detection and ML classifier further support its malicious nature. While no scripts were extracted, the sheer volume of outbound links suggests a coordinated effort to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://www.deepcreekph.com/uploads/1/3/0/4/130488812/vafanediwoxan.pdf
    • http://skylight24.com/uploads/1/3/0/6/130621435/votajisebosara.pdf
    • http://mymaxtax.com/uploads/1/3/0/6/130621163/vofuraz_lokegobapuseg.pdf
    • http://repast-catering.com/uploads/1/3/0/5/130589381/9567644.pdf
    • http://www.hopeinhollywood.org/uploads/1/3/0/8/130813667/6102286.pdf
    • http://tereayersmusic.com/uploads/1/3/0/5/130588601/vosizazurafaran.pdf
    • http://richardgeraffo.com/uploads/1/3/0/7/130776630/divivakizuve_zigebumibare.pdf
    • http://parallelhunting.com/uploads/1/3/0/3/130312969/kabov.pdf
    • http://ricayoung.com/uploads/1/3/0/6/130621542/202190.pdf
    • http://readcoolbeans.com/uploads/1/3/0/4/130435938/jigob.pdf
    • http://myflicktv.com/uploads/1/3/0/5/130589246/5e53c.pdf
    • http://northshorepersonalcoaching.sydney/uploads/1/3/0/6/130604910/sumoduxegu.pdf
    • http://narrenofnewulm.net/uploads/1/3/0/3/130313445/9430d128b8d128.pdf
    • http://psychictiffevents.com/uploads/1/3/0/4/130435937/b58e59621059e.pdf
    • http://www.hurstjhchoir.com/uploads/1/3/0/5/130545681/9893000.pdf
    • http://hilltopministries.org/uploads/1/3/0/5/130589056/1066672.pdf
    • http://fflibraries.net/uploads/1/3/0/7/130740456/3502761.pdf
    • http://suncityprides.org/uploads/1/3/0/5/130544539/0a1b5a92ce.pdf
    • http://www.uniquemagick.com/uploads/1/3/0/7/130776085/8201611.pdf
    • http://brothinvesting.com/uploads/1/3/0/5/130588349/bdbd10457f632.pdf
    • http://blitzfreight.com/uploads/1/3/0/2/130287915/6394144.pdf
    • http://blackhawbuilders.com/uploads/1/3/0/4/130435906/130435906.html#quantifiers+with+countable+and+uncountable+nouns+lesson+plan

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030cf.bin
cd472a478fabd338fa09b3ec6a34d8c9cc9228717a146706d35c1741cff6895c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x30CF 7504 bytes

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