Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0ccfdf0d9fe5842…

MALICIOUS

PDF

44.2 KB Created: 2021-09-18 03:57:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 12f566b1afa5ddea4a61477edec1e036 SHA-1: 28d8dd4df1c3c6ee5eef351bc03cbab6114029c4 SHA-256: f0ccfdf0d9fe5842477467a8b5188e529b1f3c45fbd99bb8d0e48c2c49eea1c4
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 within PDF documents. The sample also exhibits characteristics of a link farm, with numerous URLs pointing to potentially compromised websites, including one hosted on a compromised WordPress upload directory. These elements suggest the PDF is designed to lure users to malicious sites, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6049

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://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614409b242554---42916251868.pdf In PDF document text
    • https://www.sonorisation-auxerre.fr/ckfinder/userfiles/files/59130499951.pdfIn PDF document text
    • http://xatrbio.com/userfiles/file/44333241576.pdfIn PDF document text
    • http://pumarecovery.com/userfiles/files/lalitobuxizon.pdfIn PDF document text
    • https://www.kuwaitpolyurethane.com/ckfinder/userfiles/files/xexegi.pdfIn PDF document text
    • http://mediaworld.pro/ckfinder/userfiles/files/davufikuluxisobunako.pdfIn PDF document text
    • https://coil.hk/upload/files/bewipaveb.pdfIn PDF document text
    • https://badeluxe.com/userfiles/files/59345750447.pdfIn PDF document text
    • https://umutfm.com/resimler/files/29058167838.pdfIn PDF document text
    • https://geloracinta.com/contents/files/34859363528.pdfIn PDF document text
    • http://cafemsoffice.com/userfiles/files/zitakobatakofejid.pdfIn PDF document text
    • http://vincitydata.com/uploads/ckfinder/files/18317336611.pdfIn PDF document text
    • http://yuanyoujie.vip/userfiles/file/gupevomazoton.pdfIn PDF document text
    • http://balone.net/_upload/file///20048454709.pdfIn PDF document text
    • http://devitohomesorlando.com/userfiles/files/pupewupenuvaluzofegim.pdfIn PDF document text
    • http://sunway.me/ROOT_PATHuploads/file/012122302216.pdfIn PDF document text
    • https://dezsredstvompx.ru/wp-content/plugins/super-forms/uploads/php/files/43e6ea53afba640c8b11e32da07a8f39/79500237751.pdfIn PDF document text
    • http://arabstina.com/ckfinder/userfiles/files/25729786994.pdfIn PDF document text
    • http://elcwma.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/72255686862.pdfIn PDF document text
    • https://orkhaconstruction.com/wp-content/plugins/super-forms/uploads/php/files/aq8a8bgn54i3t2dp9415rt1i4s/41071323705.pdfIn PDF document text
    • http://quimis.org/js/ckfinder/userfiles/files/pewapab.pdfIn PDF document text
    • https://thuanxuongmonmb.com/admin/webroot/upload/image/files/denatudewem.pdfIn PDF document text
    • http://appli-veolia.net/ckfinder/userfiles/files/87492494722.pdfIn PDF document text
    • http://7seapharmtech.com/Uploadfiles/files/26135161407.pdfIn PDF document text
    • http://pc-driver.ru/userfiles/files/gaxebi.pdfIn PDF document text
    • http://eurolocal.info/sites/default/files/images/file/kanaler.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=lan+wifi+racing+gamesPDF link annotation

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