Malicious PDF — malware analysis report

Static analysis result for SHA-256 6342e5de21efe94f…

MALICIOUS

PDF

63.7 KB Created: 2021-09-06 20:17:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 89d48e0bb9e7d8c9fb9b7b6e844c6700 SHA-1: f80824cb73cfdb19274607872ad5f1673df518e5 SHA-256: 6342e5de21efe94fad56bd522492ddb45cc7385514700ae736681eb0930be312
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to multiple websites, many of which are hosted on compromised WordPress installations. The ClamAV detection and ML classifier indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and URL patterns suggest it's designed to lure users to external malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6403

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://www.elitelawnsolutions.co.uk/wp-content/plugins/super-forms/uploads/php/files/51nngsin1d3mtbkelok7knsvcb/bizoxinomosubena.pdf In PDF document text
    • http://sad-azov.ru/wp-content/plugins/super-forms/uploads/php/files/42d82acdb6dd18537b18f6c7c6a5af9d/65359934474.pdfIn PDF document text
    • http://tauzetaques.com/clients/1/1b/1b95303171b4519794d6fee637ef680e/File/pedibi.pdfIn PDF document text
    • https://njsolarpower.com/wp-content/plugins/super-forms/uploads/php/files/54029ccdeb10790d3cdc5844e278cc48/35196525962.pdfIn PDF document text
    • http://artecgroupservices.com/imagenes/file/sojukiv.pdfIn PDF document text
    • http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087a16199044---43988390500.pdfIn PDF document text
    • https://editora-arara-azul.com.br/site/admin/ckfinder/userfiles/files/13615635349.pdfIn PDF document text
    • http://dancephoto.ru/userfiles/files/negenividuxarokoru.pdfIn PDF document text
    • http://termocity.by/pics/files/sowinidunikuz.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bd121c13001---61846588320.pdfIn PDF document text
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/0791cea1c37172e0bd8593ec4a7f8b79/gokunapuxogul.pdfIn PDF document text
    • http://studiotipaldo.com/userfiles/files/41000062485.pdfIn PDF document text
    • http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/d43s4ps3v9tf89snkjc8p8uk30/51646410321.pdfIn PDF document text
    • http://www.lightingandhvacexpo.com/wp-content/plugins/super-forms/uploads/php/files/d9139c1891b2ca28055a765fca33c1c7/bupekexije.pdfIn PDF document text
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16079aa4014b9a---tigisez.pdfIn PDF document text
    • http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608726c2a363d---botifupafixebumizaj.pdfIn PDF document text
    • http://aprendanow.com/wp-content/plugins/super-forms/uploads/php/files/08798184562850f4b6fba4f9dbf00d24/92665745564.pdfIn PDF document text
    • https://hotel-la-licorne.fr/userfiles/file/77964847807.pdfIn PDF document text
    • http://tmkb.org.tr/ckfinder/userfiles/files/dajilajofit.pdfIn PDF document text
    • https://www.apartamentselsllacs.com/wp-content/plugins/super-forms/uploads/php/files/iojoirivvunni11atk7uf21kbf/14631702234.pdfIn PDF document text
    • http://wahluenfty.com/userfiles/74584944106.pdfIn PDF document text
    • https://gagiongvitgiong.com/ckfinder/userfiles/files/10776084783.pdfIn PDF document text
    • https://myphi.biz/nbloom/fckuploads/file/guzodi.pdfIn PDF document text
    • http://harasim.cz/uploaded/files/sojixivuxelabazatepasa.pdfIn PDF document text
    • https://cal.lighting/wp-content/plugins/super-forms/uploads/php/files/d03b1697bf1ff6961bb000307dc1ec51/50922775611.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=generacion+x+douglas+coupland+pdf+espa%C3%B1olPDF link annotation

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