Malicious PDF — malware analysis report

Static analysis result for SHA-256 fed4b69ba37b5118…

MALICIOUS

PDF

33.9 KB Authoring application: OpenOffice.org
MD5: 30df698a49485bf3b9a7913392a6ed1b SHA-1: 1863b819dfcd42c28e3cf9c06e39b88ca7527ad8 SHA-256: fed4b69ba37b5118f1df169f1c578d5f342168b5c4c45252a3a6ddc9b443d51c
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 URLs pointing to other 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' and 'ML_NYX_PDF_MALICIOUS' heuristics. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious classification. No scripts were extracted from this sample.

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://realisedesign.com/uploads/1/3/0/7/130738662/cf410b095fdf3.pdf
    • http://2ndlookdds.com/uploads/1/3/0/6/130620948/pujelagepa-nidunozo-pirum-topatomilikuda.pdf
    • http://internetconversions.com/uploads/1/3/0/6/130604610/tejavapumineka.pdf
    • http://jeffersongathering.com/uploads/1/3/0/7/130775846/2103824.pdf
    • http://varanese.mobi/uploads/1/3/0/4/130435685/povavizovexo-muwelakorip-mobufosireni-bafivazete.pdf
    • http://youarenotaloneproject.com/uploads/1/3/0/8/130813369/9b6f1a05f.pdf
    • http://rhworkplace.com/uploads/1/3/0/5/130588595/6769361.pdf
    • http://cheshiregrimm.net/uploads/1/3/0/3/130323803/fapozov.pdf
    • http://ccmotorsalesllc.com/uploads/1/3/0/6/130604197/xutorajewaxiv.pdf
    • http://northwayds.com/uploads/1/3/0/7/130775126/2027416.pdf
    • http://artani360.com/uploads/1/3/0/6/130621110/jusedatitikekubofaxa.pdf
    • http://olddominionsausage.gammaxiques.org/uploads/1/3/0/6/130639780/130639780.html#traseu+bucuresti+brasov+sibiu+harta

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002eab.bin
7f617bbaed61a8b15976f9cbd4c505eccf50933b78d37718240e8f838664fc6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2EAB 7808 bytes

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