Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8172c962b8d0ad1…

MALICIOUS

PDF

51.2 KB Authoring application: pdf-parser
MD5: d609c0e1080ec70b6f0e86a15cad8fd0 SHA-1: 97583c35ba23b753a526de194700dbf3eadc59c1 SHA-256: c8172c962b8d0ad1fd32a09b714f64b65a1c4a5f5f6b4fdad4819ec5a307d1ec
150 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. The critical PDF_SEO_LINK_FARM heuristic indicates the presence of a large number of external links, with the dominant host being 'inventureconsulting.net'. The embedded URLs suggest a phishing or SEO spam campaign. No scripts were extracted from this sample.

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://inventureconsulting.net/uploads/1/3/0/6/130621213/2759516.pdf
    • http://skillthegap.net/uploads/1/3/0/2/130271063/4528685.pdf
    • http://onlinewebcammodels.com/uploads/1/3/0/4/130489475/3ae6a40d4bda.pdf
    • http://4thandwallace.com/uploads/1/3/0/7/130776571/4d5a5869a.pdf
    • http://mypropertyquestion.com/uploads/1/3/0/6/130603809/jegederazu_jixatate.pdf
    • http://sososolutions.com/uploads/1/3/0/6/130605190/d03dda.pdf
    • http://howtoinstallsiding.net/uploads/1/3/0/4/130436458/05032b.pdf
    • http://imperfectwitch.com/uploads/1/3/0/8/130814960/61e41.pdf
    • http://aakyoga.com/uploads/1/3/0/2/130273573/gekik.pdf
    • http://asiasoft.com.sg/uploads/1/3/0/8/130814466/vikewajonorosamuruku.pdf
    • http://noahsteinman.com/uploads/1/3/0/8/130874563/afd97a135d3248.pdf
    • http://www.alexmeers.com/uploads/1/3/0/6/130639357/2005480.pdf
    • http://hankrobb.org/uploads/1/3/0/2/130270985/65418d0191eb096.pdf
    • http://andersonandhartlaw.com/uploads/1/3/0/8/130814311/sabozidakeleko.pdf
    • http://alanakolb.com/uploads/1/3/0/6/130639452/bimavexu-norakok-lazogara-besus.pdf
    • http://mrvsteaks.com/uploads/1/3/0/8/130814355/deribaluw.pdf
    • http://tjmarketing.club/uploads/1/3/0/5/130588282/0e57132.pdf
    • http://thiagotiveron.com/uploads/1/3/0/8/130873798/kojowajele-nugabatus.pdf
    • http://riu5kbwh.brdge.org/uploads/1/3/0/8/130874540/130874540.html#adiponectin+plasma+obesity

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d85.bin
4d9ec2aec8f1ca6bebe1b56492fd55a77bba3a6e98efb76508c1b835d4eb9912		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D85 2860 bytes
font_01_sfnt_off00006a37.bin
4ea76f817718158dd315ea68747ec34be7b57ad14b7ad0c75494a68fd1f1656b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A37 8332 bytes

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