Malicious PDF — malware analysis report

Static analysis result for SHA-256 c336d58d4ad92ef8…

MALICIOUS

PDF

44.5 KB Authoring application: SWFTools
MD5: f1d5bc6b045ec615c1879de4f9b3d009 SHA-1: 3869020878e9f270558a3a0580f00085248e110e SHA-256: c336d58d4ad92ef85d21980ce559639e987f3fcafd7ef25841c4391d9406f8ee
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. This suggests the primary purpose is to redirect users to other malicious or SEO-manipulated content. The ML classifier and ClamAV detection further support its malicious nature. No scripts were extracted, and the document body was heavily obfuscated, preventing a deeper analysis of its specific intent beyond link distribution.

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://claudiamurphy.com/uploads/1/3/0/6/130605253/7fb19.pdf
    • http://vaguely-specific.com/uploads/1/3/0/4/130476432/d3b284ef914.pdf
    • http://andreaspatinas.dk/uploads/1/3/0/7/130740117/ginakufi.pdf
    • http://justjess.me/uploads/1/3/0/6/130639583/gadinabamivodir.pdf
    • http://www.dr-eliza-j-beasley.com.au/uploads/1/3/0/4/130477945/bipese_jipeg_notigi_zusosit.pdf
    • http://jchapmancreative.com/uploads/1/3/0/2/130273752/tavisoj.pdf
    • http://onlinewealthtools.net/uploads/1/3/0/8/130814208/pufonusi.pdf
    • http://cajarycapital.com/uploads/1/3/0/4/130488626/777004.pdf
    • http://sunshinerestaurant.ca/uploads/1/3/0/6/130640239/b65e30.pdf
    • http://inkbirdcomms.com/uploads/1/3/0/2/130287971/b5dd11.pdf
    • http://albertonorchids.com/uploads/1/3/0/3/130323774/tazopow_mamozof_memifelu.pdf
    • http://adentabrasil.com/uploads/1/3/0/5/130545985/roduteragojo-nelefo.pdf
    • http://pensacolaaudiodocumentation.com/uploads/1/3/0/5/130540928/nafuxevotilo.pdf
    • http://inar-web.com/uploads/1/3/0/6/130621583/233361.pdf
    • http://uvproclean.com/uploads/1/3/0/7/130775386/dexogo.pdf
    • http://stillhangry.com/uploads/1/3/0/5/130589399/barub.pdf
    • http://www.alice-patterson.com/uploads/1/3/0/6/130621998/6351157.pdf
    • http://parodontistebrossard.com/uploads/1/3/0/6/130620443/tovenaduzozawuwanibu.pdf
    • http://www.cipadebate.org.uk/uploads/1/3/0/8/130814758/652849.pdf
    • http://newglasssingapore.com/uploads/1/3/0/4/130435602/rozebubamofo_muxevowoteniz_fikibu.pdf
    • http://mygvhs.com/uploads/1/3/0/5/130550960/7718625.pdf
    • http://www.djkikidoe.com/uploads/1/3/0/4/130488832/cc6f3b6fe4ff.pdf
    • http://whattosurf.com/uploads/1/3/0/7/130776811/f16b1cfc.pdf
    • http://74-123-72-107.mgwnet.com/uploads/1/3/0/5/130589186/130589186.html#word+mail+merge+to+pdf+files
    • http://vaguely-specific.com/uploads

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004994.bin
0e8d7fa328819c4765c8b991067fabb7db3d3ef75e3e0e0011cd83513ef298a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4994 8804 bytes

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