Malicious PDF — malware analysis report

Static analysis result for SHA-256 67611e8cffdf2641…

MALICIOUS

PDF

42.4 KB Authoring application: Scribus
MD5: 68566705c8665182e647fb0b3b7d912e SHA-1: be8b8762ef318bb8ed50bf1e21ab42cd2aae6190 SHA-256: 67611e8cffdf2641f9ffb06cf55fc00b3ee70150ada2f177c5630565e7abfbf8
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier also indicate maliciousness, specifically flagging it as phishing related. While no scripts were extracted, the sheer volume of links suggests a malicious intent, likely to redirect users to phishing sites or for SEO spam.

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://xadukon.pinapp.ru/uploads/2020/01/29/lavupumiza.pdf
    • http://royalflorals.com/uploads/1/3/0/4/130476778/rakozi.pdf
    • http://mifufujizo.fuck4me.top/uploads/2020/01/29/bodegaseta_sozowasol_demosejami_wozaga.pdf
    • http://anongroup.org/uploads/1/3/0/5/130589160/9300497.pdf
    • http://mommytimeindoorplay.com/uploads/1/3/0/7/130776745/9046402.pdf
    • http://northbeavercontracting.net/uploads/1/3/0/2/130272862/sisevel_xerun.pdf
    • http://incamamas.com/uploads/1/3/0/7/130740609/b6d71033.pdf
    • http://mgkindergarten.weebly.com/uploads/1/3/0/3/130379612/a1d46c18c0d0.pdf
    • http://sporttihetki.net/uploads/1/3/0/6/130639776/nelokul.pdf
    • http://jennycongrave.com/uploads/1/3/0/6/130604321/af8a14b587fce60.pdf
    • http://cnstrategies.net/uploads/1/3/0/5/130589198/powudobakudufe.pdf
    • http://lacanadalimo.com/uploads/1/3/0/7/130738951/130738951.html#sample+letter+of+recommendation+from+internship+supervisor
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001325.bin
c8abffa731dd64c783c74719114dfe5eac6b354ba343640a2e1e12fd29946476		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1325 8648 bytes
font_01_sfnt_off00006aee.bin
d907c570f1f8f2d62f38d7529dbf77de46ca3a1917ec53aca7a78bae59874b04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AEE 2616 bytes

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