Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6c105829f770639…

MALICIOUS

PDF

212.1 KB Created: 2021-09-06 07:38:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 391e9d508b2a9347403382377a2ccfaa SHA-1: 3c7802accdffa59b58730205a94cd8d95c96ea0f SHA-256: f6c105829f770639cf465a70de53f45f5c8f2cc191ac9102c0fb60a0278cdabe
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV, specifically as a PDF phishing trojan. It contains numerous links hosted on compromised WordPress sites, suggesting a phishing or malware distribution campaign. The presence of external URIs and compromised CMS upload links indicates an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4008

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
  • 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.
  • 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://chcial.ru/uplcv?utm_term=neufert+pdf+free+download+italiano PDF link annotation
    • https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c8d8731afb0---misusagaxojuluxakuzeg.pdfIn PDF document text
    • http://associacaoguainumbi.org.br/wp/wp-content/plugins/formcraft/file-upload/server/content/files/1608f7051ac958---78797145677.pdfIn PDF document text
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16087dc702f783---figazon.pdfIn PDF document text
    • http://gdbchurch.com/clients/43262/File/723955292.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a9a6a41a5a9---xomug.pdfIn PDF document text
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/378607c346877ac1649865fae02f006d/48168398988.pdfIn PDF document text
    • http://mispuntossaga.com/campannas/file/tupewutaroz.pdfIn PDF document text
    • http://medicaldistri.com/ckfinder_files/files/dawib.pdfIn PDF document text
    • http://northjerseyseniormenssoftballleague.com/clients/2/22/22e10641a135963e7b476298ec508c3c/File/92029714882.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075929f6b30a.pdfIn PDF document text
    • http://piotrkowska77.pl/zdjeciafile/34343643735.pdfIn PDF document text
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160a7a9255ed3f---dowixobijut.pdfIn PDF document text
    • http://elma-itc.ru/!upload/files/kimavimije.pdfIn PDF document text
    • http://antonio-pelella.eu/userfiles/files/deradi.pdfIn PDF document text
    • http://basyapiemlak.com/yukleme_klasoru/userfiles/file/43108516317.pdfIn PDF document text
    • http://aczelzalog.hu/tmp/wawafolixut.pdfIn PDF document text
    • http://www.trafikyaren.com/wp-content/plugins/super-forms/uploads/php/files/2at88l0rcg0p305p7o3vm64ug0/dosevisi.pdfIn PDF document text
    • https://southtours.com/wp-content/plugins/super-forms/uploads/php/files/cjsbckhgjubji6ngion1v9par0/dofinukexev.pdfIn PDF document text
    • http://adice-area.com/pictures/files/pezotafewe.pdfIn PDF document text
    • https://rtvpuls.com/ckfinder/userfiles/files/99675262400.pdfIn PDF document text
    • https://xuantruongtech.com/images/ckeditor/files/88980094864.pdfIn PDF document text
    • https://tonitomov.com/picture/file/lezuxarake.pdfIn PDF document text
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c6265b54001---kifekojorejoxonopojigim.pdfIn PDF document text
    • https://davebakeragency.com/wp-content/plugins/super-forms/uploads/php/files/aaff2b1d4a64977e38b5367e22fd7bda/kebudologisalanotixel.pdfIn PDF document text
    • http://kovove-ploty-brany-zabradli.cz/UserFiles/File/wadek.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_off0002f504.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F504 21388 bytes
SHA-256: 85db31a5057220416bfa36e9d3fe465437675860a763f4beb4c9b0e68aa1f386
font_01_sfnt_off00032b13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32B13 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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