Malicious PDF — malware analysis report

Static analysis result for SHA-256 26e24cb650e1746c…

MALICIOUS

PDF

57.9 KB Created: 2021-09-29 01:35:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: dc393756c1250638c4c0643cd5a06cd5 SHA-1: ba3f467542cab359e698517f94c73e5f5f7588d6 SHA-256: 26e24cb650e1746c4f5547bac8a994472dc9ea8bf8e25a99c87a5935862dc35c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs, many pointing to compromised WordPress sites, suggesting it's designed to redirect users to malicious content or phishing pages. The ClamAV detection and ML classifier further support its malicious nature, likely as a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5595

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://cructi.ru/uplcv?utm_term=gta+3+infinite+health+cheat+pc PDF link annotation
    • https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161327304ad680---mijolejifasisazuz.pdfIn PDF document text
    • https://edukiya.com/wp-content/plugins/super-forms/uploads/php/files/09e1c24d07758e1b9666a153b6981771/86091683655.pdfIn PDF document text
    • http://studio5r.com/userfiles/files/nalesoxiloxetaligo.pdfIn PDF document text
    • http://nokianhakkablue.ru/ckfinder/userfiles/files/lelexaxigizidegenuwi.pdfIn PDF document text
    • http://bluecars.pl/userfiles/file/64605379679.pdfIn PDF document text
    • https://ngonluathan.vn/images/ckeditor/files/83011587333.pdfIn PDF document text
    • https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613d85aba7ad3---26269506930.pdfIn PDF document text
    • http://flygarfield.net/userfiles/file/63630818575.pdfIn PDF document text
    • https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613848da734cb---75253523558.pdfIn PDF document text
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/hmpcvbmcahfs976vgkc56t41b4/winogugusinuvilumu.pdfIn PDF document text
    • https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/161422a3221826---kopuvubeverikaporimix.pdfIn PDF document text
    • http://plkorea77.com/ckupload/files/12701246805.pdfIn PDF document text
    • http://sentezetutmerkezi.com/upload/ckfinder/files/74606613548.pdfIn PDF document text
    • https://thefencedocumentary.com/adminfiles/file/85118692420.pdfIn PDF document text
    • https://soportedevida.mx/ckfinder/userfiles/files/mebififedirumina.pdfIn PDF document text
    • http://rklatex.com/userfiles/file/99001833616.pdfIn PDF document text
    • https://artedelvalle.cl/gal/files/file/21159513122.pdfIn PDF document text
    • https://estatecambodia.com/htdocs/cljr/data/files/jubebirabiwoz.pdfIn PDF document text
    • http://dnt-mayak.ru/content/File/taravuxilif.pdfIn PDF document text
    • https://pleasanton.com/wysiwygfiles/file/teruriwebilop.pdfIn PDF document text
    • https://denizlihorozu.com/resimler/files/16853910750.pdfIn PDF document text
    • http://mfahk.com/upload/files/wudibanaboz.pdfIn PDF document text
    • https://saintarseny.ca/sites/saintarseny.ca/files/file/vadawejepaji.pdfIn PDF document text
    • https://kirmatas.com/userfiles/file/sopadexumuniditevedi.pdfIn PDF document text
    • http://netart.hu/userfiles/file/jizawunemozevoboderonom.pdfIn PDF document text
    • http://klenderbio.com/upload/files/84475477831.pdfIn PDF document text
    • 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_off0000b295.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB295 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.