Malicious PDF — malware analysis report

Static analysis result for SHA-256 b27400171a0293b4…

MALICIOUS

PDF

54.5 KB Created: 2021-08-17 07:14:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-27
MD5: 9b5c91b48b3e8d582c41907b6211aef8 SHA-1: 283a89239c3d4a5394a868024f5c96b30e7323e5 SHA-256: b27400171a0293b44036bb2904756e3c1f494f7f94d94bde89edc47140fa400e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was detected as a phishing trojan by ClamAV and flagged by an ML classifier. It contains a link farm pointing to numerous URLs, many of which are hosted on compromised WordPress sites or disposable domains. The primary purpose appears to be directing users to malicious content via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8825

Heuristics 5

  • 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.
  • 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://cructi.ru/uplcv?utm_term=ejemplos+de+investigacion+enfoque+mixto PDF link annotation
    • http://xn--szabowski-tub.pl/userfiles/file/13070540460.pdfIn PDF document text
    • https://cowichanseniors.ca/userfiles/file/vabifafejifamibatesol.pdfIn PDF document text
    • http://animationcoach.com/userfiles/file/26465029204.pdfIn PDF document text
    • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/160982bffed83a---83256744592.pdfIn PDF document text
    • https://stayatrosetta.com/wp-content/plugins/super-forms/uploads/php/files/5s1du21naa6k96m98s50grsl7f/wazusifalumuke.pdfIn PDF document text
    • http://fbchitchcock.org/clients/8/8b/8bdff38a390027835eb24981312b950c/File/lavaluwekab.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/16102f90abeec6---divuvuvi.pdfIn PDF document text
    • http://albino-pitti.com/pub_img/file/kovirinebesobe.pdfIn PDF document text
    • https://singaporenotarypublic.com/wp-content/plugins/super-forms/uploads/php/files/65dc8c97843f47dd4c9cf7fe41dee66d/57748378114.pdfIn PDF document text
    • http://autosklo.sk/pictures/file/rulage.pdfIn PDF document text
    • http://foto-preiss.at/upload_files/files/tovosadoniz.pdfIn PDF document text
    • http://pixel-pro.ru/upload/file/nuduju.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16078b54a702d1---xerit.pdfIn PDF document text
    • https://rolcsi-bau.hu/userfiles/files/wolaxeruxaremaxitepigep.pdfIn PDF document text
    • http://chataphan.com/file_media/file_image/file/38467500415.pdfIn PDF document text
    • https://daleel.global/wp-content/plugins/super-forms/uploads/php/files/t7gv30661ic3l3blcbnif7o2hg/80886650000.pdfIn PDF document text
    • http://dorp.pl/userfiles/files/29447993606.pdfIn PDF document text
    • http://stardentalcare.org/userfiles/file/45872012392.pdfIn PDF document text
    • https://www.edutechusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080b5d6a746b---niravogiv.pdfIn PDF document text
    • http://apexnepaltravel.com/userfiles/file/temolugivexuriv.pdfIn PDF document text
    • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae9a8541d8d---15311386560.pdfIn PDF document text
    • https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074cf42420de---44892913867.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/08a05346f108892513ac212715f27cd6/84396252284.pdfIn PDF document text
    • https://bucatariizidite.ro/printuri-fi/files/sabinudegin.pdfIn PDF document text
    • https://africanresearchcenter.com/userfiles/file/33308871867.pdfIn PDF document text
    • http://vce34.ru/attachments/file/jisajidedefunimovu.pdfIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

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