Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bbc2bd8984a45f2…

MALICIOUS

PDF

63.8 KB Created: 2021-08-13 19:13:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: cadfd6a8f02bf6f3e5b5fc0430f801dd SHA-1: dc555ed173f5b4d8a1f1914b944b6f4a692b74ce SHA-256: 6bbc2bd8984a45f2d81a9821ecfbb85db7259eeba9978ebc28f2b36b6ee52fc7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for Pdf.Phishing.Trojan. The presence of numerous links pointing to compromised CMS uploads and disposable hosting suggests a link farm designed to redirect users to malicious sites. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8912

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://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/gobkaghar5qnnqdhuq41bbdm0o/38125997214.pdf In PDF document text
    • http://hondatayho.top/img-ngocbao/files/342350571.pdfIn PDF document text
    • http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b4a453e392---xasulajexumew.pdfIn PDF document text
    • https://ontime-taxi.kg/wp-content/plugins/super-forms/uploads/php/files/10187c6ee7f31160c3a3a64f79546cac/77385170765.pdfIn PDF document text
    • https://actioncoach.com.my/wp-content/plugins/formcraft/file-upload/server/content/files/160afffc7a8097---guromuji.pdfIn PDF document text
    • https://didacostruzioni.it/userfiles/file/70298983911.pdfIn PDF document text
    • http://frederickfollows.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609673f6e283b---14900743513.pdfIn PDF document text
    • https://srp-galabau-rostock.de/wp-content/plugins/super-forms/uploads/php/files/jma6uvt2a5nff7sk8amdegllb9/82515224460.pdfIn PDF document text
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b80eb7b0530---80862501582.pdfIn PDF document text
    • http://ahdongjiu.com/upload_fck/file/2021-4-29/20210429210900459930.pdfIn PDF document text
    • http://carszana.com/image/upload/File/genopedosironakigepirov.pdfIn PDF document text
    • https://cremyco.com/app/webroot/docs/file/53777951675.pdfIn PDF document text
    • https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161025f685fc0d---dalilixodaretijodod.pdfIn PDF document text
    • https://zivotzaokny.eu/res/file/fopekewolebuw.pdfIn PDF document text
    • https://angkoronetour.com/userfiles/file/wamubejunevaliwamasug.pdfIn PDF document text
    • http://auburn-companies.com/userfiles/files/fulaxazitav.pdfIn PDF document text
    • http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160cc0cf6cb844---ziwututabek.pdfIn PDF document text
    • http://adabaskimerkezi.com/upload/file/74407133921.pdfIn PDF document text
    • https://infravoip.com/wp-content/plugins/super-forms/uploads/php/files/24342a180bff421d833c3bea2d3e6909/bogatomokekipuzagusavipid.pdfIn PDF document text
    • https://pointsourcegroup.com/wp-content/plugins/super-forms/uploads/php/files/d3a26bf5fd0ac23057dbd0d77c37fca8/98794595641.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607783e17629a---58685014348.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/99540107062.pdfIn PDF document text
    • http://fautographie.org/images/userfiles/files/movosuruzugikulobozitusi.pdfIn PDF document text
    • https://malabarmail.com/ckfinder/userfiles/files/wamararizoxogufatido.pdfIn PDF document text
    • http://whs1979.net/clients/65916/File/50182546234.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=youtube+downloader+y2mate+statusPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d1d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1D8 17036 bytes
SHA-256: 04ae4eaa5e1fa022278b8051acc32c323ba1ca5054f0ef2afaa439d6f536cf24