Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea8fbb39d0588601…

MALICIOUS

PDF

63.6 KB Created: 2021-07-14 02:02:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: e045430f9c9e5ace96582f129f98be6d SHA-1: 888b27076773f1d6bc2084f963d29b5a0ba96d5c SHA-256: ea8fbb39d058860174a210798e32ead20c8c4f851f3a78c5b188bd0e03c122df
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript and numerous external URIs, many of which point to compromised CMS upload directories. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM indicates a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The embedded JavaScript likely facilitates the redirection to these malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5217

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://philabc.ru/uplcv?utm_term=abigail+and+brittany+hensel+husband PDF link annotation
    • https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b720ffe7f2c---jejugodozesexigoludega.pdfIn PDF document text
    • https://peiitw.com/Upload/ckeditor/files/72930104774.pdfIn PDF document text
    • http://itaindustrial.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16080b67c61504---42964336626.pdfIn PDF document text
    • https://www.beadvised.co.uk/wp-content/plugins/super-forms/uploads/php/files/3b101c9665f0b35a662bedc486bd47ab/89479675873.pdfIn PDF document text
    • http://avtokit116.ru/!upload/files/denidaje.pdfIn PDF document text
    • https://bamfieldrental.com/userfiles/file/ditodosejefanejonivuf.pdfIn PDF document text
    • http://adaviestransportltd.com/userfiles/file/57325310469.pdfIn PDF document text
    • https://winston-woodward.com/wp-content/plugins/super-forms/uploads/php/files/ea62ee97da2b0f20c5fc1bbe9189e8c3/luwinokekolewufunumuwewu.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/f33d06c64cace727c7b4ed6233b9ea94/1789801975.pdfIn PDF document text
    • http://banphimchuot.com/userfiles/file/jojasedudabunomidetexozu.pdfIn PDF document text
    • https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/1c5eaac74cd93ba7c7245248b5914def/92769232530.pdfIn PDF document text
    • https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/dsn0i1qp6o5bld4rvn2spa9mcf/kedopunedefedaloli.pdfIn PDF document text
    • http://andlupa.com/userfiles/file/wabiwuf.pdfIn PDF document text
    • http://autosvanbeek.nl/mindcms/js/ckf/userfiles/files/9369150878.pdfIn PDF document text
    • https://oknoplus-omsk.ru/wp-content/plugins/super-forms/uploads/php/files/fccba534c637e5bfa7cc06b821545214/mamunetuwegexapikulux.pdfIn PDF document text
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ce8351441a6---11136331980.pdfIn PDF document text
    • https://ancoraeducacion.com/images/batolo.pdfIn PDF document text
    • http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/16083085aa322f---fapajosovumon.pdfIn PDF document text
    • https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16073370714358---mavozaguxo.pdfIn PDF document text
    • https://beribuket.ru/wp-content/plugins/super-forms/uploads/php/files/7ca5c7821f3249f14a7d6b5f1b55a088/1546531189.pdfIn PDF document text
    • https://primewestelectrical.com/wp-content/plugins/super-forms/uploads/php/files/05a4421fb169cd41fc2f0a64c86c7072/vebesudekupivul.pdfIn PDF document text
    • https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/9ec7c484a902a064c80e164271e4059a/76477539768.pdfIn PDF document text
    • http://coss-wynn-reunion.com/clients/d/db/dbe3622004495b304d8703879a486b7d/File/6177605121.pdfIn PDF document text

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