Malicious PDF — malware analysis report

Static analysis result for SHA-256 de86cc218f7616ab…

MALICIOUS

PDF

82.2 KB Created: 2021-07-18 12:02:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 9d78428848671e20f8e47d9a0a04ac4d SHA-1: 87d42c72e449a88c949b82f966c3bb0c843547a4 SHA-256: de86cc218f7616ab1807aacd0b63a761758176f0def464a535dc64cb9cf167de
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was detected as a phishing trojan by ClamAV. Static analysis revealed it functions as a link farm, with numerous embedded URLs pointing to compromised websites. These links are likely used to redirect users to malicious content, such as phishing pages or malware download sites.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4833

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://copab.tn/216mag.svn/uploads/files/semobupoxexunoludokebevu.pdf In PDF document text
    • http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160802bd2b50c6---wevejesepi.pdfIn PDF document text
    • https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606cd2c94df22---wasorupabidutidimi.pdfIn PDF document text
    • https://laatjehuisweerstralen.nl/upload/file/jopulimix.pdfIn PDF document text
    • https://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/8fc115848b40f9061c9d01c14dc7371c/65133949861.pdfIn PDF document text
    • http://www.smartlandgroup.com//ckfinder/userfiles/files/xipunumuresunarugezuzinu.pdfIn PDF document text
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b81502b393e---92283947584.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/fkprtp9s900rj2uguq2hkiqvkd/lovawufepunimevike.pdfIn PDF document text
    • https://dmvassociates.com/wp-content/plugins/super-forms/uploads/php/files/0a148fb47ab844f8063065f0b334f5e8/29053967994.pdfIn PDF document text
    • https://mobistore.co.nz/wp-content/plugins/super-forms/uploads/php/files/a39b573f741e43b1f689d9bbec7db482/rokedi.pdfIn PDF document text
    • https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/bgu44efv873cefkin5612lu1i6/paxobekilexonaw.pdfIn PDF document text
    • http://miamiwars.pl/wp-content/plugins/super-forms/uploads/php/files/b911d33638e8c1f4562895dadb44f7b6/zadoxumesobirezifusibusu.pdfIn PDF document text
    • http://gchs1969.com/clients/867877/File/vetixopumekikok.pdfIn PDF document text
    • http://klpa.net/userData/board/file/regisaluruximoxevuxi.pdfIn PDF document text
    • http://rydelko.pl/userfiles/file/vumava.pdfIn PDF document text
    • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/9g1erltgl85vsqu8od7l7l3832/jelawojozata.pdfIn PDF document text
    • https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/1609408b55fd3b---77562871452.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/19245537275.pdfIn PDF document text
    • http://gesundimjob.at/images/content/files/69317422555.pdfIn PDF document text
    • http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8266cb1999---mojol.pdfIn PDF document text
    • https://masterpieces-mallorca.com/wp-content/plugins/super-forms/uploads/php/files/728c12e18e9c7337f512160ff3289f85/jalepixavub.pdfIn PDF document text
    • https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/ba50734e64b6f1f11e5584ac35edfad8/76655279324.pdfIn PDF document text
    • http://www.hydro-tg.pro/upload/file/79665106846.pdfIn PDF document text
    • http://cz-synergy.cz/data/file/15924562729.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=traditional+mehndi+designs+imagesPDF link annotation

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