Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ecfd9191363f00f…

MALICIOUS

PDF

49.7 KB Created: 2021-08-30 01:58:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 9942b4670fbe4fb1b59456c3a70e4633 SHA-1: 5794521526513b74ff0e84c3078b59e1283040b2 SHA-256: 5ecfd9191363f00f4cd614b1ed3592b745f6b176287d0249ff0523e989186f64
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of a phishing lure. It contains a large number of external links, many pointing to compromised CMS upload storage and disposable hosting, suggesting an attempt to distribute malicious content or redirect users to phishing sites. The document body is heavily obfuscated and appears to be a screenshot lure, typical for phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9143

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 49 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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.arc-welding.co.uk/wp-content/plugins/super-forms/uploads/php/files/2c02fcu3qbe2pbc98u31jl81b3/90345644149.pdf In PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073a0785ec18---43731342985.pdfIn PDF document text
    • https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083de86bdc61---pakuwazozeju.pdfIn PDF document text
    • http://dajuicebarus.com/uploads/files/lesewut.pdfIn PDF document text
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/160902075eaa20---32757743157.pdfIn PDF document text
    • http://videofilm-tv.ru/content/File/kajavige.pdfIn PDF document text
    • http://erictex.com/ufiles/files/loxifunejigi.pdfIn PDF document text
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611406a3318d5---suzofomosoxugudag.pdfIn PDF document text
    • http://csc025.com/userfiles/file/20210623103320_ijtlrz.pdfIn PDF document text
    • http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607b122975f4f---punuwikanabibozajonarudi.pdfIn PDF document text
    • http://skrabl.pl/www/rpbd/fck/file/fosuvefimedanejolevom.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ac44eadb48---vekidalakotisidove.pdfIn PDF document text
    • http://uleshuzatshop.hu/files/file/75393679614.pdfIn PDF document text
    • https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160803502f0cb4---wesaxivopakezunitaped.pdfIn PDF document text
    • http://stembridgefamilyreunion.com/clients/0/0d/0db03be1a97f3028174cafb645c8c91f/File/lawesixupub.pdfIn PDF document text
    • http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1610a67a2c1236---gedumuba.pdfIn PDF document text
    • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f9a39147b0a---mazugexepifosumuminenit.pdfIn PDF document text
    • http://kozhencherrymtc.org/userfiles/file/zovob.pdfIn PDF document text
    • https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/160aca17b0393a---87506040182.pdfIn PDF document text
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/ien5eqgp1np84ljfelgob601ud/44350063889.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/160f4cd71a2d3c---zozixovamugoponusikes.pdfIn PDF document text
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/gexajalosojesewofu.pdfIn PDF document text
    • http://phunggia.biz/userfiles/file/21375922595.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090ab0616642---69106784464.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=weight+of+1+cu+ft+of+concretePDF link annotation