Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c5e0c86de56e7fa…

MALICIOUS

PDF

38.7 KB Authoring application: Scribus
MD5: 5ec21d25723e7499ba19d0db40ac4876 SHA-1: 6fc132971ba3d0395829d2027f84379c3b88655e SHA-256: 4c5e0c86de56e7fa194ce9b7a96f8d57c56c229df5e6a293c6946a51b9c5183d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded URLs pointing to external PDF documents. This behavior is indicative of a link farm or a distribution mechanism for further malicious content, as suggested by the 'PDF_SEO_LINK_FARM' heuristic. The ClamAV detection further supports its malicious nature. No scripts were extracted, but the primary attack pattern involves redirecting users to a network of potentially harmful external resources.

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://michellejfernandez.com/uploads/1/3/0/2/130289589/8299267.pdf
    • http://andnowwhatsnext.com/uploads/1/3/0/6/130620561/danimegutulow.pdf
    • http://kresadmissions.com/uploads/1/3/0/5/130551457/solugorefux-joxalitatob.pdf
    • http://worldwidefactoring.com/uploads/1/3/0/5/130588509/2007579.pdf
    • http://mtdefender.com/uploads/1/3/0/6/130604547/2404224.pdf
    • http://neverweatherband.com/uploads/1/3/0/5/130589083/fabugawemogatitugi.pdf
    • http://btbrv.com/uploads/1/3/0/2/130289363/5234042.pdf
    • http://wendtauto.com/uploads/1/3/0/6/130605161/2688505.pdf
    • http://shopsimplybundles.com/uploads/1/3/0/6/130603975/29943dfc9.pdf
    • http://midcitycarriages.org/uploads/1/3/0/5/130589094/xoxewifafew-fafoditu-woxofimajixava.pdf
    • http://mhrandlenovels.com/uploads/1/3/0/4/130479044/130479044.html#blocked+numbers+android+5

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001268.bin
2504e783e8ecbccb5f4bfb2d545a01b0852f5effdfa621a32675734c56e9bc6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1268 8428 bytes

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