Malicious PDF — malware analysis report

Static analysis result for SHA-256 471df707eccaf5be…

MALICIOUS

PDF

62.3 KB Created: 2021-07-06 20:03:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: a4838b5a80ffd3c93751101153a78a9e SHA-1: fe3d184663bbfff769a039031f4a17b3194c67d0 SHA-256: 471df707eccaf5bebef36c49f1a6fb5f759cfa65765c9cb905810b973f5bd9fb
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous links pointing to compromised WordPress sites, suggesting an attempt to distribute malicious content. The heuristic firings indicate a link farm strategy, likely to obscure the true malicious destination and evade detection. The ClamAV detection as Pdf.Phishing.Trojan further supports the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5046

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://all-vehicle.net/js/upload/files/71529010199.pdf In PDF document text
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16078e3f910bf8---sosim.pdfIn PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bd7a1931f5b---40971593464.pdfIn PDF document text
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160a8e41dc2303---lagazobene.pdfIn PDF document text
    • http://rittenhousereunion.com/clients/a/ad/ad7d26974070b67854a29702aed78614/File/53216848077.pdfIn PDF document text
    • http://xn--80aadq3ae7aa5k.xn--p1ai/upload/file/purizegenetikesadar.pdfIn PDF document text
    • http://lungshingcentre.com/userfiles/94398814968.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cd4487acf6---dopukolagew.pdfIn PDF document text
    • https://lostsoulsmemorialnj.org/wp-content/plugins/super-forms/uploads/php/files/f2cc57d6aaa9cb698aa447eb50c90761/81143209530.pdfIn PDF document text
    • http://axiomestates.com/userfiles/file/56132881634.pdfIn PDF document text
    • https://www.northernillumination.com/wp-content/plugins/super-forms/uploads/php/files/033f569f957175d9569e95d5334dc388/36760241094.pdfIn PDF document text
    • http://www.conectadoscomdeus.tv/arquivos/file/jetaxuxozirutadotesoxaliz.pdfIn PDF document text
    • http://globalaircrafttech.com/ckupload/files/79846018397.pdfIn PDF document text
    • https://www.varishastalari.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ef5dbcdda1---24433299597.pdfIn PDF document text
    • https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/tk7o10e1cajf9r9ubr4d6a4hrp/78865434981.pdfIn PDF document text
    • https://best-turbos.com/wp-content/plugins/super-forms/uploads/php/files/ff19d846e5ecbc4ce095c6a8c1000498/43219130864.pdfIn PDF document text
    • http://diversecityuk.com/userfiles/file/dujomalu.pdfIn PDF document text
    • https://agrachoff.ru/wp-content/plugins/super-forms/uploads/php/files/395269fb04e5132fba1d4b9aaa5a0c61/gomijobafezepotuji.pdfIn PDF document text
    • http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/16091c8a5c78b9---pasatar.pdfIn PDF document text
    • http://richmediahouse.com/admin/uploads/file/pisabulitilalopi.pdfIn PDF document text
    • https://sluganarodu.org/userfiles/files/58017430463.pdfIn PDF document text
    • https://ceilford.org/wp-content/plugins/super-forms/uploads/php/files/5c29bbfb5279247faa03bc7781ff60e7/17151099812.pdfIn PDF document text
    • http://venusland.vn/app/webroot/img/files/23690810121.pdfIn PDF document text
    • https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/a3857e9ae9d1d301dad19973aa1bad5f/15025445069.pdfIn PDF document text
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a85ceb468fd---lomosawup.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=what+does+it+mean+for+a+solution+to+be+supersaturatedPDF link annotation

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