Malicious PDF — malware analysis report

Static analysis result for SHA-256 2267202f98f13c90…

MALICIOUS

PDF

37.2 KB Authoring application: Serif PagePlus
MD5: 0947d16e12be9a343943ef4b6269634d SHA-1: 9f71e432f3d970ead4c3e77f9cffe7fde1999108 SHA-256: 2267202f98f13c90580e915edd9c4cfb0041de46d190cb6fef7775770618e76f
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 behavior is indicative of a link farm or a distribution mechanism for further malicious content, as suggested by the 'PDF_SEO_LINK_FARM' heuristic and ClamAV detection. The ML classifier also strongly flagged this as malicious. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery or execution methods.

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://brendonsingh.com/uploads/1/3/0/7/130775182/b87fdcb907.pdf
    • http://michiesdogmeatsandtreats.com/uploads/1/3/0/2/130289333/vefixopexi.pdf
    • http://sigmapivu.com/uploads/1/3/0/6/130639665/57023670607a.pdf
    • http://whoeasy.us/uploads/1/3/0/5/130589020/xapow.pdf
    • http://ce-seniors.com/uploads/1/3/0/6/130604014/tarasefe.pdf
    • http://musicconnectionproject.org/uploads/1/3/0/7/130776247/1cffe4ec5.pdf
    • http://lottomagico.com/uploads/1/3/0/3/130323106/fexisuwuk.pdf
    • http://www.raquelmusic.net/uploads/1/3/0/6/130621917/retijakakize_konubedu_fepini.pdf
    • http://jacobjmorris.com/uploads/1/3/0/5/130550667/f49c1a79c0.pdf
    • http://cnstrategies.net/uploads/1/3/0/3/130379231/3d891.pdf
    • http://mcclinton.net/uploads/1/3/0/2/130272994/377ff.pdf
    • http://ptxsynchro.org/uploads/1/3/0/6/130639978/4017767.pdf
    • http://thepacketpusher.net/uploads/1/3/0/5/130539448/f6cfa.pdf
    • http://bushnelltents.com/uploads/1/3/0/5/130589180/4233635.pdf
    • http://simyasuaritma.com/uploads/1/3/0/8/130814042/cf5355193a565.pdf
    • http://axesatmobility.net/uploads/1/3/0/8/130815013/d8f21.pdf
    • http://74-123-75-206.mgwnet.com/uploads/1/3/0/5/130589450/130589450.html#treating+blocked+eustachian+tubes

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003697.bin
7a0884244cb618f4e32163c43caae4f3cdc90363a704f6b1589ab9016d38fc2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3697 7764 bytes

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