Malicious PDF — malware analysis report

Static analysis result for SHA-256 89e0e2a3b77c3f66…

MALICIOUS

PDF

80.3 KB Created: 2021-08-27 15:04:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 118a8dfb1cc22f406ed8b950bc7fdbc9 SHA-1: 3edec1742a26f68ed3a21b332ceaa5a161f41a64 SHA-256: 89e0e2a3b77c3f668e22e1b085edc661d5023c7988641e04ea77764e3cb2c3c8
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF file was flagged by multiple heuristics as malicious, including ClamAV and an ML classifier. It contains a link farm pointing to compromised WordPress upload directories, suggesting an attempt to distribute malicious content or phish users. The presence of embedded URLs and the nature of the link farm indicate a likely intent to redirect users to malicious sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9911

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://duext.com/wp-content/plugins/super-forms/uploads/php/files/0bd094d18d944e0acfd9569d1efaf578/lekemapawedixum.pdf In PDF document text
    • https://ambientltg.com/wp-content/plugins/super-forms/uploads/php/files/cb57be1836c867a806e61d19eb5e5fa7/66423886636.pdfIn PDF document text
    • http://talleresjpg.es/img/file/juvaxivijesukopiziwakosob.pdfIn PDF document text
    • http://valeneighbors.com/userimages/manimarolonapixes.pdfIn PDF document text
    • https://digireg.it/upload/xexinajas.pdfIn PDF document text
    • http://www.toeterloeh44.de/files/5754289776.pdfIn PDF document text
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/161136093c9be2---xogifilikodi.pdfIn PDF document text
    • http://raduzhniy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160add671cc79b---23818464833.pdfIn PDF document text
    • http://associacaoguainumbi.org.br/wp/wp-content/plugins/formcraft/file-upload/server/content/files/160a67fa57d64c---90799159472.pdfIn PDF document text
    • http://www.laterveer-biesenbeek.nl/ckfinder/userfiles/files/62356495973.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/xalapi.pdfIn PDF document text
    • https://www.tri-or.fr/tri-or/ckfinder/userfilesfiles/69697122116.pdfIn PDF document text
    • https://steammining.com/userfiles/file/85328150348.pdfIn PDF document text
    • http://ahkjt.com/upfile/file/loroz.pdfIn PDF document text
    • http://fitviewer.de/files/file/zuvopatoxuzumedelalo.pdfIn PDF document text
    • http://nguyenquangcomputer.com/upload/ck/files/82896752580.pdfIn PDF document text
    • http://luckdidea.com/ckfinder/images_store/files/51798843374.pdfIn PDF document text
    • http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/6c9021e3e8f180d2fedf63cf4479f13e/93284522962.pdfIn PDF document text
    • http://foodzipo.com/uploads/userfiles/files/koxim.pdfIn PDF document text
    • https://tskrea.com/userfiles/file/45047405015.pdfIn PDF document text
    • http://toyotarenta.net/FileData/ckfinder/files/20210804_3750D94FB9C0BB43.pdfIn PDF document text
    • http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/160742a4d96c13---lavipomexobirexexuto.pdfIn PDF document text
    • https://dp-engineers.com/admin/userfiles/file/dowavunadubarokenevogo.pdfIn PDF document text
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c8e5a73aa8---gobolimaziredatinewuvapil.pdfIn PDF document text
    • https://tractorpulling-emmeloord.nl/upload/file/66305724060.pdfIn PDF document text
    • http://www.julitolaschools.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607399b244032---29621271989.pdfIn PDF document text
    • http://pspectr.ru/userfiles/file/tarunewomaxuxemamilatosu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=snoopy+in+space+onlinePDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d78c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD78C 10356 bytes
SHA-256: 352ecddbd918e019bad5217bd405ed68660b4f746a5f9916ef26ef2f362a6da6
font_01_sfnt_off0000ef0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF0E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010720.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10720 17160 bytes
SHA-256: 43cad5835bee5606dbff16de14a2968b9746d77f89da51e17a1c4e50c7b702d3

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