Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8ccab34389295ee…

MALICIOUS

PDF

113.8 KB Created: 2021-10-13 13:21:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 069a429a28a548f196c7c7cf8fff793c SHA-1: 3b5ff17c9efc11155ee48918451fdeca003faf01 SHA-256: d8ccab34389295eee3f894d578004d964b704a2856ac587ac0b0dc3bc86f8074
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded URLs, many of which point to disposable hosting or compromised CMS upload storage, indicating a link farm designed to distribute malicious content or phish users. ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8373

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 https://morethancars.eu/uploads/edytor/file/57699454852.pdf In PDF document text
    • https://karthikaspices.com/uploads/file/jopefejiligegobedojo.pdfIn PDF document text
    • http://nhatnamvina.vn/rich_editor/file/mefaku.pdfIn PDF document text
    • http://bainihu.com/upfiles/editor/files/soviwunito.pdfIn PDF document text
    • http://polaryachtmanufactory.com/res/wysiwyg/file/25339947659.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c2449a8ff5---31243059339.pdfIn PDF document text
    • http://krr-nfe.com/suratnfe/UserFiles/File/57662259448.pdfIn PDF document text
    • http://sanxuatbanthinghiem.org/app/webroot/uploads/files/lemixejitulo.pdfIn PDF document text
    • https://wangwangcamp.com/uploads/files/202109200452194926.pdfIn PDF document text
    • http://usefchina.com/uploadfile/file///2021092422020645.pdfIn PDF document text
    • http://pension-erlkoenig.de/img/editor/file/77701654586.pdfIn PDF document text
    • http://aesg2edcv.handylover.com/upload/files/22461480077.pdfIn PDF document text
    • http://lecostationery.com/files/file/tabajirinizajarikilegib.pdfIn PDF document text
    • http://togclick.com/media/userFckfiles/file/lejif.pdfIn PDF document text
    • http://giaodantanthaison.com/Images_upload/files/nuwurodo.pdfIn PDF document text
    • http://rund.cz/UserFiles/File/pezepufobudasosi.pdfIn PDF document text
    • https://asztromiskolc.hu/ckfinder/userfiles/files/4494158455.pdfIn PDF document text
    • http://hrt-foto.hu/_user/file/bedix.pdfIn PDF document text
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/16165356c91213---vidofolojoso.pdfIn PDF document text
    • https://manage4.realtourvision.com/rtv/ckfinder/userfiles/images/files/54541100929.pdfIn PDF document text
    • https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1613bc8dd86efe---2904371166.pdfIn PDF document text
    • https://www.lipca.com/ckfinder/userfiles/files/pozirezazegokepuxuxexodu.pdfIn PDF document text
    • http://daegyung.kr/userfiles/file/20210914053620.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/oscUj7J0Gjw/uplcv?utm_term=how+to+read+literature+like+a+professor+revised+pdfPDF link annotation

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