Malicious PDF — malware analysis report

Static analysis result for SHA-256 d148d1705fb3cae6…

MALICIOUS

PDF

47.7 KB Created: 2021-07-06 09:46:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 192097c40fd1111a809b4cd71caef8b1 SHA-1: 88c7db00db878895e85b08e83345562da776217c SHA-256: d148d1705fb3cae64bd8a392718d9b4470c9a895c869c3e391e033b9fa627309
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample contains embedded JavaScript, which is often used to redirect users to malicious websites. Multiple heuristics indicate the PDF acts as a link farm, pointing to compromised WordPress sites and disposable hosting, suggesting an attempt to distribute phishing content or malware. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9202

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://daynexweb.com/upload/ckfinder/files/kefumebamigixezalif.pdf In PDF document text
    • http://dahchen.tw/userfiles/file/tiwozudaz.pdfIn PDF document text
    • http://www.circoloaletrium.it/wp-content/plugins/formcraft/file-upload/server/content/files/16081b5b35a77d---valugiwo.pdfIn PDF document text
    • http://daieimotors.com/js/upload/files/vajevugarikonamap.pdfIn PDF document text
    • https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b548e73a20---joronujuk.pdfIn PDF document text
    • https://expeditions-travel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607400ea2fe76---fukawezifojapeko.pdfIn PDF document text
    • https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c8dcda9aa5f---43899199765.pdfIn PDF document text
    • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/a72bcc9ac97b1fca38c77b637d98be12/32707970220.pdfIn PDF document text
    • http://alpha-cp.com/userfiles/file/55218365454.pdfIn PDF document text
    • https://cwlighting.com/wp-content/plugins/super-forms/uploads/php/files/a2ebfa254a10a880cdb8ddd9d1de935a/pabugadojinavaxob.pdfIn PDF document text
    • http://driver-jazda.pl/upload/file/rebisewatoxeni.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/bap2sbo4sha0t0vm6gsm6eplr1/52745624322.pdfIn PDF document text
    • https://teenvolunteerdallas.org/wp-content/plugins/super-forms/uploads/php/files/4c142c71ade401129b72f9ec2c9b0533/5237284315.pdfIn PDF document text
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/16094de4defbc2---92723173905.pdfIn PDF document text
    • https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606f72ba5debd---zesotabufaxa.pdfIn PDF document text
    • https://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/s0j29e4ag8dtl0r2qe107viv83/wipivefa.pdfIn PDF document text
    • https://acgroupenterprise.com/userfiles/file/46305075378.pdfIn PDF document text
    • http://www.iece.in/userfiles/file/95348575488.pdfIn PDF document text
    • https://armenia4d.com/contents//files/xepozoxapovovetidi.pdfIn PDF document text
    • http://dodici12.ru/wp-content/plugins/super-forms/uploads/php/files/3v9tac6iia8389e5vld4r1oes4/jamelewekunazi.pdfIn PDF document text
    • https://edusfera.pl/upload/file/26928759558.pdfIn PDF document text
    • http://interiorconsignments.com/media/file/foxubonizupazu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=types+of+lighting+in+cinematographyPDF link annotation

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