Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd58b7b839d0d0c6…

MALICIOUS

PDF

63.5 KB Authoring application: OpenOffice Draw
MD5: 2d540f660be3bf021339b3c26d09f7f5 SHA-1: cd0f572f1fcfc4a3bec4d11c10dd044a5b3573c8 SHA-256: dd58b7b839d0d0c64a0fef711645ccea19f197c0824924666685238bb3173381
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links to external PDF documents hosted on various domains. This behavior is indicative of a link farm designed to distribute malicious content or conduct phishing attacks. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the phishing and traffic redirection nature of this file. 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://greensboromusicteachers.org/uploads/1/3/0/6/130621298/vejurixifova.pdf
    • http://itldo.net/uploads/1/3/0/2/130289424/desaxarumova-bijepiguvital-rufikes.pdf
    • http://ekajaparidze.com/uploads/1/3/0/4/130435833/501381.pdf
    • http://dentalstudentportal.com/uploads/1/3/0/4/130488851/1066973.pdf
    • http://stephengilardi.com/uploads/1/3/0/8/130814248/6cae1b65.pdf
    • http://mythicarmory.com/uploads/1/3/0/6/130639092/5275506.pdf
    • http://www.hydrolacticsystem.com/uploads/1/3/0/3/130313049/5099844.pdf
    • http://leftlanestudios.com/uploads/1/3/0/2/130289235/metotaxepijizenom.pdf
    • http://gameofthronesofmuppets.com/uploads/1/3/0/7/130776085/rosafemumevur.pdf
    • http://www.action-today.com/uploads/1/3/0/6/130621542/7983415.pdf
    • http://oaxhealth.com/uploads/1/3/0/3/130312974/5853953.pdf
    • http://topiarycatalog.com/uploads/1/3/0/4/130477915/tomupebatupeguv.pdf
    • http://www.cleaningbuddies.com.au/uploads/1/3/0/2/130289213/5741754.pdf
    • http://speelkoning.net/uploads/1/3/0/5/130588187/130588187.html#solar+vapour+compression+refrigeration+system+pdf

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012b2.bin
e48e50996fdeb8450e715009645954fb0cc0218405fa95c6b73ad4937381a9af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12B2 8788 bytes
font_01_sfnt_off0000a72c.bin
f689831a78fdc75a09928fee1cdc91396d006636b118bdc9cd58e9fd6488ec20		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA72C 16136 bytes
font_02_sfnt_off0000bbc8.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBBC8 2652 bytes

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