Malicious PDF — malware analysis report

Static analysis result for SHA-256 51484fb0414cbe60…

MALICIOUS

PDF

40.3 KB Authoring application: OpenOffice Draw
MD5: bd187084ae5e7ea27851a7d5f00adffd SHA-1: e7f9eac045617c3a399c4c54552e845e0c21d156 SHA-256: 51484fb0414cbe60228b1380d719347691fe18c5237469f8bd5ff5a99892fdef
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded external links, a technique commonly used to redirect users to malicious websites or further stages of an attack. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall' and the ML classifier output strongly indicate malicious intent. The primary function appears to be acting as a traffic director or phishing lure by presenting a mass of external links.

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://srwebdeveloper.com/uploads/1/3/0/7/130776824/zesixekoxamimob.pdf
    • http://dartmouthmountaineering.org/uploads/1/3/0/4/130477249/lobometuz.pdf
    • http://shanerdavis.com/uploads/1/3/0/2/130288673/f477f6.pdf
    • http://kiblotto.bet/uploads/1/3/0/5/130589384/rutin.pdf
    • http://morganrv.com/uploads/1/3/0/5/130550844/pazas.pdf
    • http://lespetitsgourmands.net/uploads/1/3/0/6/130621106/6072139.pdf
    • http://aukstamford.com/uploads/1/3/0/7/130738785/botekemon.pdf
    • http://irvingunnerving.com/uploads/1/3/0/7/130776367/512883.pdf
    • http://mercertruckaccessories.ca/uploads/1/3/0/7/130775737/ruwakutumadimanajoto.pdf
    • http://foundationrepairkingston.ca/uploads/1/3/0/8/130874385/zafupanatelebak.pdf
    • http://kpcdesign.org/uploads/1/3/0/6/130621261/nizigidurad.pdf
    • http://uteo.us/uploads/1/3/0/7/130775142/woderi.pdf
    • http://boulderboardroom.com/uploads/1/3/0/4/130483413/sizasiz-luwaxis-beweg-sukasegi.pdf
    • http://cherrydaleva.us/uploads/1/3/0/4/130476804/aef83ff.pdf
    • http://rayonlifestyle.com/uploads/1/3/0/7/130775606/376678.pdf
    • http://musepop.us/uploads/1/3/0/6/130639042/davadika.pdf
    • http://bytcorp.org/uploads/1/3/0/6/130604477/tenokomogaba.pdf
    • http://joeblitzstein.net/uploads/1/3/0/5/130543092/xuxeb_lojuzuditowe_jefuxuwir_jukipaw.pdf
    • http://www.grahamslife.com/uploads/1/3/0/4/130436018/mafazuritejavovosil.pdf
    • http://reboundat.com/uploads/1/3/0/5/130590047/130590047.html#modern+linux+administration+pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002450.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2450 16036 bytes
font_01_sfnt_off00003bce.bin
3a4c3e4be182c30fd2b46194070bd9443b3ee785ea8152063484c895a7ecc8d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3BCE 9336 bytes

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