Malicious PDF — malware analysis report

Static analysis result for SHA-256 c32d711ab274d143…

MALICIOUS

PDF

43.9 KB Authoring application: LibreOffice
MD5: 357fcc4e3633215c5557e860c1206210 SHA-1: 12a24a7fa35c40824bb36d4b44200a771f0a8d61 SHA-256: c32d711ab274d143251ea608b5d767692452cd77f3d48064aa33df61f42f8d6f
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, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 and the ML classifier output strongly indicate malicious intent. The embedded URLs are likely used to redirect users to phishing sites or download further malicious content.

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://zoepantinjewelry.com/uploads/1/3/0/2/130274305/ligemubumavakadak.pdf
    • http://chaselea.co.uk/uploads/1/3/0/6/130620467/5155019.pdf
    • http://amandacake.com/uploads/1/3/0/7/130739530/c0303a9f1c3eba.pdf
    • http://vipiski-online12.icu/uploads/2020/01/29/kotipatisoxa-mevuj.pdf
    • http://sunshineboattours.com/uploads/1/3/0/6/130621719/rikotogejevosobil.pdf
    • http://mrkevinsclass.weebly.com/uploads/1/3/0/2/130287989/logebabaporuki.pdf
    • http://nc956.com/uploads/1/3/0/7/130739949/musovonojidasit_tetim_watez_luxodatoji.pdf
    • http://bartolomeilaw.com/uploads/1/3/0/3/130379474/130379474.html#god+is+not+mad+at+you

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011dc.bin
82754dd1a9ba13c0394d0e7cabadf2e0b4182a63822a494eb567d28c09d22682		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11DC 8884 bytes
font_01_sfnt_off00006305.bin
e7b11a1ed743786dee34f8e145322cf84d28922f8b2d8cdf3c4a9dd8e2cb68e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6305 16816 bytes

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