Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea1fca27c5f6ffc8…

MALICIOUS

PDF

49.7 KB Created: 2021-09-21 07:19:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: edddf0c36fb9cb522cf9cff6db13a055 SHA-1: ea464f06b92b6274fd072653a0b4fd158fd77a04 SHA-256: ea1fca27c5f6ffc86849713d0afbaefec97cc0654acc40f6cac2236c23133a58
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links pointing to external websites, many of which are hosted on compromised CMS uploads or disposable domains, suggesting a phishing or malware distribution attempt. The heuristic firings indicate a link farm designed to redirect users, likely to a malicious payload or phishing page. ClamAV detection as 'Pdf.Phishing.Trojan' further supports the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8005

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://coretry.ru/uplcv?utm_term=lightroom+new+version+2021+download+apk PDF link annotation
    • https://pezenasenchantee.fr/userfiles/file/18323596628.pdfIn PDF document text
    • http://elfast.ru/userfiles/file/65247448258.pdfIn PDF document text
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/0ua8rbborf8aauqec779nk43jc/16173267679.pdfIn PDF document text
    • https://baptistfriends.org/media/renokuforame.pdfIn PDF document text
    • http://jtylek.pl/Upload/file/zerugeboxa.pdfIn PDF document text
    • http://bilafafafa.com/shopadmin/upload/files/96582075296.pdfIn PDF document text
    • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613771ad07494---zidedali.pdfIn PDF document text
    • https://ambient-interier.cz/files/files/78728392152.pdfIn PDF document text
    • http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/5457a58813e56bc3da36c12017e6c9e9/95180305588.pdfIn PDF document text
    • http://jfac.kr/ckfinder/userfiles/files/14534330886.pdfIn PDF document text
    • http://grgct.com/ckfinder/userfiles/files/75497600576.pdfIn PDF document text
    • http://a2kat.ru/userfiles/file/kukebawakomafigofofeka.pdfIn PDF document text
    • http://ozt.zielonetarasy-cieplice.pl/uploads/userfiles/files/8080818841.pdfIn PDF document text
    • http://improntediteatro.it/userfiles/files/pusubavubixezujenudosu.pdfIn PDF document text
    • https://atlastoursntravels.com/userfiles/file/lijunikopofutagafamukudi.pdfIn PDF document text
    • http://drapikowski.pl/uploaded/fck_files/file/46334661029.pdfIn PDF document text
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/16149229e12e09---50046809047.pdfIn PDF document text
    • http://vietsonplastic.com/uploads/userfiles/file/watizifegososo.pdfIn PDF document text
    • http://b40555.handyfriendship.com/upload/files/34270929068.pdfIn PDF document text
    • https://altinhediyeler.com/calisma2/files/uploads/lodiposularadivutafasuje.pdfIn PDF document text
    • https://ag-concept.ru/wp-content/plugins/super-forms/uploads/php/files/71295bee9301c07351b222214510632a/66964489861.pdfIn PDF document text
    • http://www.lbtfilm.com/uploads/files/28526429466.pdfIn PDF document text
    • https://blgjad.com/upload/files/zufixuni.pdfIn PDF document text
    • http://www.smartlandgroup.com/ckfinder/userfiles/files/49318280766.pdfIn PDF document text
    • http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130e7b93ac1f---37010822290.pdfIn PDF document text