Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f0eca032b27fc6b…

MALICIOUS

PDF

80.7 KB Created: 2021-09-17 19:35:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 01be24bf57b8e47bc40acdcb8beebe2d SHA-1: 677352c210f2a57b9f18bbaea193368290ff02cf SHA-256: 3f0eca032b27fc6bab7538b3819c071fefcc173662c7690160ea5301707b6e67
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains an embedded JavaScript stream and numerous external URIs, many of which point to compromised CMS upload storage or disposable hosting. The ClamAV detection 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0' strongly indicates a phishing or trojan payload. The embedded JavaScript likely facilitates the redirection to these malicious sites, serving as a component of a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4208

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://garglob.ru/uplcv?utm_term=install+kodi+on+amazon+firestick PDF link annotation
    • https://greenfins-thailand.org/uploads/file/91730717436.pdfIn PDF document text
    • http://jfac.kr/ckfinder/userfiles/files/98179923562.pdfIn PDF document text
    • http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/bc1a2eb28f9c75ddd81115302b1dd4cb/2468268065.pdfIn PDF document text
    • http://lex-ter.ru/admin/ckfinder/userfiles/files/82470114767.pdfIn PDF document text
    • https://alcoquimicos.com/ckfinder/userfiles/files/xupukekasirotujotenase.pdfIn PDF document text
    • http://theprofitnesstrainers.com/userfiles/file/wutupaduvaketuse.pdfIn PDF document text
    • https://emotionalgift.com/ckfinder/userfiles/files/gikowafovave.pdfIn PDF document text
    • http://thongthien.vn/upload/files/kibasopijukerapopagenuvud.pdfIn PDF document text
    • http://arhive.np-sp.ru/img/file/22354411097.pdfIn PDF document text
    • https://healthmatters.me/userfiles/file/winebozudujup.pdfIn PDF document text
    • http://appartementslisa.it/an3_Uploads/file/17837048001.pdfIn PDF document text
    • http://www.jindatunnel.com/up_files/file/dibaguvelakikariwetogub.pdfIn PDF document text
    • http://manchetenewsms.com.br/ckfinder/userfiles/files/sudin.pdfIn PDF document text
    • https://melnikhouse.com/userfiles/file/jojabopigamuvureditad.pdfIn PDF document text
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/3cbfd9f54367ae3e8281531030d9582c/59042150725.pdfIn PDF document text
    • https://blackknowledge.com/wp-content/plugins/super-forms/uploads/php/files/b4a5ac94a1781ea579208a284c574ba6/35035051989.pdfIn PDF document text
    • http://coniperfumes.cl/js/ckfinder/userfiles/files/wetugomujizow.pdfIn PDF document text
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/l7c3n9r6belbl82dlr5ehioj06/zefexub.pdfIn PDF document text
    • https://gpuhub.net/wp-content/plugins/super-forms/uploads/php/files/m7mgkdelf9ouh37fouh13o0l8g/35778201489.pdfIn PDF document text
    • https://www.nvsrolko.org/ckfinder/userfiles/files/86952526628.pdfIn PDF document text
    • http://draftingfloorplan.com/ckfinder/userfiles/files/95866608961.pdfIn PDF document text
    • https://trompis-tondschungel.de/userfiles/file/35495593581.pdfIn PDF document text
    • http://ttmm.co.jp/ckfinder/userfiles/files/88688582731.pdfIn PDF document text
    • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a72bc9e424---54428800319.pdfIn PDF document text
    • http://kasaitogo.com/uploads/files/81411856682.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC01 18128 bytes
SHA-256: 46ccd971ee267c0e7b3c401d4ae3b283ba32cb26795af9537916aebab33dfbff
font_01_sfnt_off00011b3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B3F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1