Malicious PDF — malware analysis report

Static analysis result for SHA-256 47da267d4872ac38…

MALICIOUS

PDF

63.6 KB Created: 2021-06-20 12:19:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: f23bd7b5044c09d20b2058100eef970f SHA-1: caa3124dbf5dae0e3ab30037f52895e5ec5ce987 SHA-256: 47da267d4872ac3825253b90a6441de0a4091e5ce68b902ab0a402b86edb085a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF file contains numerous embedded links, many pointing to compromised WordPress sites, suggesting a link farm or phishing lure. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. The document body's reference to "training matrix template excel free download" serves as a pretext to encourage users to click the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8608

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160838e97db734---93849388030.pdf In PDF document text
    • https://taevlingar.se/images/pages/file/83050345848.pdfIn PDF document text
    • https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/297a13edc0f7f5533c76eebca5cfa59b/12547087130.pdfIn PDF document text
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b45be28bbb3---tabat.pdfIn PDF document text
    • http://tktravel.shop/FileData/ckfinder/files/20210604_5B8C364D9A31A88C.pdfIn PDF document text
    • https://wills.sg/wp-content/plugins/super-forms/uploads/php/files/6ad157c6e6029d36c4cead1c85e828cc/70970382433.pdfIn PDF document text
    • https://accesoriosalmayor.com/images/userfiles/file/40691463928.pdfIn PDF document text
    • http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16071a89285519---67461926268.pdfIn PDF document text
    • http://josephfellerlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/movisagufaxenalolijaxuxol.pdfIn PDF document text
    • http://matstravel.ru/userfiles/file/54011992921.pdfIn PDF document text
    • https://fwullong.com/upfiles/editor/files/21881406727.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160c2c07275791---bojusefukowikudo.pdfIn PDF document text
    • http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160a1b4fb7b56a---25293541511.pdfIn PDF document text
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609fc6ce66d5f---kapetonilodalalodop.pdfIn PDF document text
    • https://mszukam.pl/dat//file/11173402626.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=training+matrix+template+excel+free+downloadPDF link annotation
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA75 5404 bytes
SHA-256: e0b992d5fe1e1416c4fe0d069be72ee4704058748a1713886fc1b65a201eca4e

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