Malicious PDF — malware analysis report

Static analysis result for SHA-256 573f00b4c5edf2a6…

MALICIOUS

PDF

59.5 KB Created: 2021-10-06 20:17:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 18c11cb835951b2deb94831302d7f643 SHA-1: cac3b1a4b0feb0181b79d0ef8a058e06f6c4b528 SHA-256: 573f00b4c5edf2a6020d4b6be8acab89a3344444e78cb4866349aa617d7c7ff0
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links, many of which point to websites hosted on compromised Content Management Systems (CMS). This behavior is indicative of a link farm used for phishing or distributing malware. The ClamAV detection further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3255

Heuristics 5

  • 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.
  • 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://marinda.ru/pics/images/file/17249162360.pdf In PDF document text
    • http://veraschwemmle.de/fckdata/file/2128499799.pdfIn PDF document text
    • http://1utilaje.ro/mm/file/zixitarudaxawuwibobolak.pdfIn PDF document text
    • http://portamarioarchitetto.eu/userfiles/files/fevijexivedorolut.pdfIn PDF document text
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613fcc584c608---87125363315.pdfIn PDF document text
    • http://gmart-express.com/demo/uploadpic/file/nurizir.pdfIn PDF document text
    • https://shivajigrihnirman.com/singhania/downloads/file/soxuf.pdfIn PDF document text
    • https://sunridgecorp.com/uploads/files/202110041757382931.pdfIn PDF document text
    • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/161512de7d0b9e---rabujamapawam.pdfIn PDF document text
    • http://boekenwinkelindex.nl/images/uploads/63464930252.pdfIn PDF document text
    • http://zehanbiopharma.com/upload/files/10086956871.pdfIn PDF document text
    • http://ipcmanpower.com/admin/style/images/userfiles/file/valozaxo.pdfIn PDF document text
    • http://adaviestransportltd.com/userfiles/file/nedubexudirinakesujenofiz.pdfIn PDF document text
    • https://vico-immobilien.com/ckfinder/userfiles/files/34892694558.pdfIn PDF document text
    • https://bank-kredit.at/ckfinder/userfiles/files/98177903087.pdfIn PDF document text
    • http://shiny-baby.com/fileimage/file/fexijomasinow.pdfIn PDF document text
    • https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/108ua03qle436dod7ge7evi13g/1103603115.pdfIn PDF document text
    • http://kadh.kr/bobod/upload/file/vitosapinomojamimaxu.pdfIn PDF document text
    • https://donnasalon.ru/wp-content/plugins/super-forms/uploads/php/files/a09ad0b605fa3452c1034c269d73fbcb/68216427606.pdfIn PDF document text
    • http://mikllc.mn/uploads/files/48618189379.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16142c2432ebf1---nidexoxujilanoduwid.pdfIn PDF document text
    • https://www.vibrationmonitoring.asia/wp-content/plugins/formcraft/file-upload/server/content/files/1615a24705609b---puregoguxidezujonoxamu.pdfIn PDF document text
    • http://houselandia.ru/files/geluzugokakekukod.pdfIn PDF document text
    • https://sunrise-photon.com/upfiles/editor/files/kanoj.pdfIn PDF document text
    • https://avistravel.ro/userfiles/file/68946834011.pdfIn PDF document text
    • https://personalloan2u.com/wp-content/plugins/super-forms/uploads/php/files/a624609c7c7cbb7b1b9272ab1f81b99e/73064089311.pdfIn PDF document text
    • http://zbraneklapka.cz/ckfinder/userfiles/files/dikodeveravakalined.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=naruto+live+action+movie+release+datePDF link annotation

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