Malicious PDF — malware analysis report

Static analysis result for SHA-256 458f2646195a8ab8…

MALICIOUS

PDF

45.7 KB Created: 2021-09-22 16:10:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 5141b406937fe74f185d0fdf25bade48 SHA-1: 9e6e409e4fd1b787223ec79ec0e40b5f6c64049f SHA-256: 458f2646195a8ab80e4b641d1ce0828602fb31178c6f37b35efa6b19b31c5b38
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which are part of a link farm hosted on disposable domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were extracted, the PDF structure and URL patterns are indicative of a malicious document designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7355

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://nomylo.ru/uplcv?utm_term=devdas+full+movie+hd+1080p+watch+online PDF link annotation
    • http://acelybio.com/upload/files/zofazukimesak.pdfIn PDF document text
    • http://salonmysliwskirys.pl/userfiles/file/9105098520.pdfIn PDF document text
    • https://grupo-bahia-real-estate.com/ckfinder/userfiles/files/70402811217.pdfIn PDF document text
    • http://dhf-china.com/d/files/85053965208.pdfIn PDF document text
    • http://eventologia.com/userfiles/files/bibivas.pdfIn PDF document text
    • http://stkvn.ru/wp-content/plugins/super-forms/uploads/php/files/bbf0317e9ef0172f2f3bab6be668c4e4/nudoto.pdfIn PDF document text
    • https://mehreganimaging.ir/images/upload/files/858344086.pdfIn PDF document text
    • http://beastyenergy.com/userfiles/file/78906878154.pdfIn PDF document text
    • https://feniks9.ru/ckfinder/userfiles/files/64903355756.pdfIn PDF document text
    • http://bekescsaba.varosom.hu/userfiles/files/51075747821.pdfIn PDF document text
    • http://risorsaterra.it/userfiles/files/11451875703.pdfIn PDF document text
    • http://luberoff.com/userfiles/file/65788055867.pdfIn PDF document text
    • http://bibrka-school.org.ua/ckfinder/userfiles/files/48609991281.pdfIn PDF document text
    • http://dentherapia.hu/files/file/42326952716.pdfIn PDF document text
    • http://paoladebenedetti.eu/userfiles/files/34470480055.pdfIn PDF document text
    • http://zsdbiopharm.com/upload/files/62270575709.pdfIn PDF document text
    • http://rsst77.ru/upload/files/34110700655.pdfIn PDF document text
    • http://jimsclub.net/new/board/img_tinfo/file/20210904081410.pdfIn PDF document text
    • http://begues.mobi/userfiles/file/katojuwedixutuduso.pdfIn PDF document text
    • http://avsa.org/sites/default/files/images/files/tekilikodosanuxone.pdfIn PDF document text
    • https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e3f764a7a8---galof.pdfIn PDF document text
    • https://aquaprosmart.com/userfiles/files/doregejalosobut.pdfIn PDF document text
    • http://canigrup.com/userfiles/file/ruvukumepimotujiderifu.pdfIn PDF document text
    • https://titishop.co/upload/files/67564531656.pdfIn PDF document text