Malicious PDF — malware analysis report

Static analysis result for SHA-256 f486eac7b2e78559…

MALICIOUS

PDF

60.9 KB Created: 2021-09-20 12:11:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: b380f54a508840dfc2853d7a33b59b13 SHA-1: a29129690270afb494aeaa0236a3480a16c39285 SHA-256: f486eac7b2e785594866f40f9aca6d06f839b530a64859aa3a3c2d8b78d74502
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including a machine learning classifier and ClamAV, indicating malicious content. It functions as a link farm, embedding a large number of URLs that redirect to other PDF files, suggesting a phishing or malware distribution scheme. The presence of embedded URLs and the nature of the heuristics point towards an attempt to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8776

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://queure.ru/uplcv?utm_term=could+not+find+class+android+graphics+drawable+rippledrawable PDF link annotation
    • https://jdsliquorlocker.com/nbloom/fckuploads/file/99538948627.pdfIn PDF document text
    • http://myarrahnu.com/mo_images/files/xevirijuzibap.pdfIn PDF document text
    • http://byty-pardubice.eu/UserFiles/File/filubakaxesitujoduva.pdfIn PDF document text
    • https://netkat.in/ckfinder/userfiles/files/vipenalafikekosepisaga.pdfIn PDF document text
    • http://przyrodnik-kujawy.eu/userfiles/file/minog.pdfIn PDF document text
    • http://wonikquartz.com/upload/editor/file/1630852782.pdfIn PDF document text
    • https://k9-warrior.com/wp-content/plugins/super-forms/uploads/php/files/fm4e6e4c6hq9nls2acf538g52k/segexoginemiwadekebufa.pdfIn PDF document text
    • http://www.espaciocultivarte.com/ckfinder/userfiles/files/70820073181.pdfIn PDF document text
    • http://gpba.ge/admin/ckeditor/ckfinder/userfiles/files/9452836805.pdfIn PDF document text
    • http://tabouligrill.com/ckfinder/userfiles/files/22603872021.pdfIn PDF document text
    • https://ahl2005.com/ckfinder/userfiles/files/35030328412.pdfIn PDF document text
    • https://dispecom.com/cms_dispecom/sgi_userfiles/userfiles/files/fekavosuramawozo.pdfIn PDF document text
    • http://www.focitabor.hu/userfiles/file/sifakitaxagasetebuzapeg.pdfIn PDF document text
    • http://k-sta.kr/FileData/ckfinder/files/20210906_3478463B45E76464.pdfIn PDF document text
    • http://smcertificationservices.com/userfiles/files/6845014424.pdfIn PDF document text
    • https://www.colline-eternelle.com/ckfinder/userfiles/files/75692278692.pdfIn PDF document text
    • https://taxfirma.com/userfiles/file/fivaverasarug.pdfIn PDF document text
    • http://maymaygiaydachidang.com/upload/files/13479812902.pdfIn PDF document text
    • https://flyags.com/editorResources/file///kuwok.pdfIn PDF document text
    • https://leganordavigliana.com/uploads/file/verifenovefotugu.pdfIn PDF document text
    • https://carparts-fixture.com/file/file/76908108087.pdfIn PDF document text
    • http://lmnn.ru/userfiles/file/vafaveluxaropu.pdfIn PDF document text
    • http://www.its-dph.cz/admin/fckeditor/editor/userfiles/file/98216539289.pdfIn PDF document text
    • https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/161396dbc9b2be---zixobizomonojatekikejurib.pdfIn PDF document text