Malicious PDF — malware analysis report

Static analysis result for SHA-256 111e8cf59388bc63…

MALICIOUS

PDF

41.2 KB Authoring application: Poppler-utils
MD5: f3e7cb7ab88a5402b33ba5c5201adb8c SHA-1: d072ca4d57059c4bbe1c416f45b0dcf6600bdaf0 SHA-256: 111e8cf59388bc632c2ab310dc6a7c16e91aab9f54d76a4cc8c3d7cd488db71c
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links to external PDF files, a technique often used to distribute malware or conduct phishing. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the heuristic 'PDF_SEO_LINK_FARM' suggests the document is designed to drive traffic to these external resources, which are likely malicious.

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://ihateqatar.net/uploads/1/3/0/6/130621683/nugetegerabiwo.pdf
    • http://smartbuyerstech.com/uploads/1/3/0/7/130739218/7504641.pdf
    • http://emilyreigh.com/uploads/1/3/0/5/130551981/niwuroninusijoxani.pdf
    • http://bebelluche.com/uploads/1/3/0/5/130590741/998ec.pdf
    • http://xhfkdhfkex.com/uploads/1/3/0/4/130435737/cbdb0dc2614845.pdf
    • http://sbcperu.org/uploads/1/3/0/6/130620667/3779291.pdf
    • http://southperthbaptist.org/uploads/1/3/0/8/130814805/3976990.pdf
    • http://www.thetravelauthority.com.au/uploads/1/3/0/2/130274322/c05e72.pdf
    • http://biggerpicture.shop/uploads/1/3/0/5/130551832/c6ef7287a.pdf
    • http://sitesubject.com/uploads/1/3/0/6/130639278/4826586.pdf
    • http://xnf6v6.bdgct.com/uploads/1/3/0/7/130776271/130776271.html#rheumatic+endocarditis+medicine

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ad9.bin
7d759384bf2eefb8452562b4381f3258abcec02492cf0cc23de60192ad2f765f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4AD9 8248 bytes

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