Malicious PDF — malware analysis report

Static analysis result for SHA-256 a208d00eab31ed4f…

MALICIOUS

PDF

83.8 KB Created: 2021-07-19 15:58:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 3083a2dc191cd0802025ab844712e716 SHA-1: 5fa7c858b090090e1f08c1fe8454ca440b7f94db SHA-256: a208d00eab31ed4f5db81990e0a7b7a6b69018298cdd1fb0c69429e49893eee8
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is a common technique for executing malicious code. Several heuristics indicate the PDF acts as a link farm, pointing to compromised WordPress sites and potentially disposable hosting, suggesting an attempt to distribute further malicious content or phish users. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly supports a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5550

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 http://peusch.lu/userfiles/files/fikawegivujunur.pdf In PDF document text
    • http://guoyangmoju.com/userfiles/files/82351394872.pdfIn PDF document text
    • https://suksesunited.com/contents//files/kojadufofiwu.pdfIn PDF document text
    • https://davaocarrental.com/images/file/71849841313.pdfIn PDF document text
    • http://www.empresasdelimpeza.info/wp-content/plugins/formcraft/file-upload/server/content/files/16093fee60914d---jozosovawibavekara.pdfIn PDF document text
    • http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1606cdee13a236---ziminiponatekodedato.pdfIn PDF document text
    • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/7p8kguif75e4sk5fjhsqo3u3p2/34400347158.pdfIn PDF document text
    • https://craftsmancuttingdies.com/wp-content/plugins/super-forms/uploads/php/files/s2nj1deeb6e5chb4iler1vkdjr/mipowamut.pdfIn PDF document text
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be0dbbb7e40---24615027389.pdfIn PDF document text
    • https://a2designbg.com/userfiles/file/84518149915.pdfIn PDF document text
    • https://acornschoolcharleston.org/wp-content/plugins/super-forms/uploads/php/files/7c78d42937a8973f3ac331d7f1afee2b/kidunoxekefosudaronuzazej.pdfIn PDF document text
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/b0011df5283b699c3488fd09c7734fcd/28408358881.pdfIn PDF document text
    • http://kaizousha.com/js/upload/files/fotibimirodatabikebapofe.pdfIn PDF document text
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072f8357bdcf---kunimaxur.pdfIn PDF document text
    • https://lamaisonducoeur.ca/upload/editor/file/wonalivotivowenutoni.pdfIn PDF document text
    • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c7036425596---jijuferawurikorasamalu.pdfIn PDF document text
    • https://wpsqld.com.au/wp-content/plugins/super-forms/uploads/php/files/fd940411aa241a84b85f9580f23928e9/89573353098.pdfIn PDF document text
    • http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/1609bc749f06fc---duzotixukerovadozo.pdfIn PDF document text
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/de48c77a2e4ae8bb31135b77c090c752/28197701119.pdfIn PDF document text
    • https://thriveelearning.com/wp-content/plugins/super-forms/uploads/php/files/310075988450b45cdb47dfd1d6b7268a/59772158254.pdfIn PDF document text
    • https://archcosmeticstudio.com.au/wp-content/plugins/super-forms/uploads/php/files/8e9c18682d7da0190cd70d88384b68ca/62372744534.pdfIn PDF document text
    • http://pillshop.ru/uimg/files/30147616358.pdfIn PDF document text
    • http://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/4241cdb6ab9e99ed8e3220b129421a7c/ribotaxat.pdfIn PDF document text
    • https://miaousland.fr/ckfinder/userfiles/files/48097032671.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=a+catalyst+increases+rate+of+reaction+byPDF link annotation

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