Malicious PDF — malware analysis report

Static analysis result for SHA-256 d00d6786321d0281…

MALICIOUS

PDF

76.2 KB Created: 2021-09-01 19:58:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 3a7d0cdfea227b2c980686e2deb4dbd8 SHA-1: fdbb284af690fd71b0de62d7ccf6ce9832c4cc05 SHA-256: d00d6786321d0281347698b1d394588a65f941b19591d5adc91016a49b591a00
164 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript, which is a common technique for executing malicious code. The file also hosts numerous links to external websites, many of which are hosted on compromised WordPress sites or disposable domains, suggesting a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate a phishing or malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 7

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://weinquartier.at/wp-content/plugins/super-forms/uploads/php/files/66d43fe98c067b9a375e40b84e293606/joxuv.pdf In PDF document text
    • http://gardenofsound.com/userfiles/files/wevugusetevadilisup.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/irkjig2gdrnak5ejt00gvfmn01/riridame.pdfIn PDF document text
    • https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/1607b87b7b4ee2---6030579548.pdfIn PDF document text
    • https://adsbudget.net/userfiles/file/dekij.pdfIn PDF document text
    • http://clarklawtexas.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/78441701856.pdfIn PDF document text
    • https://2-view.org/home/view/public_html/ckfinder/userfiles/files/29142486707.pdfIn PDF document text
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/160782f2b3f209---61914916167.pdfIn PDF document text
    • http://nutronicltd.com/userfiles/file/14967846745.pdfIn PDF document text
    • http://vector-food.pl/userfiles/file/58906376354.pdfIn PDF document text
    • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/16098581669bde---telibilafovosoruf.pdfIn PDF document text
    • https://massagetheory.ca/wp-content/plugins/super-forms/uploads/php/files/0e321d0a02d96cc7431d8c1d9a5d244b/sorajubula.pdfIn PDF document text
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160b2cace8a641---sariw.pdfIn PDF document text
    • https://naucharts.com/ckfinder/userfiles/files/jobevetadepuk.pdfIn PDF document text
    • http://www.anglometais.com.br/adm/Editor/ckfinder/userfiles/files/zuvivijipejuwenon.pdfIn PDF document text
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a79982d5dd1---bavaxiwaj.pdfIn PDF document text
    • https://imahima.xyz/js/ckfinder/userfiles/files/54547528927.pdfIn PDF document text
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/23db6ce84557a4d360f027b0d2d0918a/60123908562.pdfIn PDF document text
    • https://www.eziblank.com/wp-content/plugins/super-forms/uploads/php/files/s5skf38frrnj2p0j5pekocc804/fabemovoxoriso.pdfIn PDF document text
    • https://dungcuruamui.com/wp-content/plugins/super-forms/uploads/php/files/muav6kb8tmprsjlrvu8fip6vkl/36789200505.pdfIn PDF document text
    • http://hamlineparkplaza.com/assets/amund/ckfinder/userfiles/files/93962874387.pdfIn PDF document text
    • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/7198n81a3tblhbdjet6kgkd5o6/sobupuje.pdfIn PDF document text
    • http://www.grupohk.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c014f04346d---wafaduritezatujuxeluluvo.pdfIn PDF document text
    • http://extintoresorigen.com/images/editor/kanipavexitupafesogezuk.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=2000+ford+expedition+owners+manual+pdfPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c378.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC378 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000db8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB8F 11092 bytes
SHA-256: 4104e6fe77bec49aaaa1948de1455149b11bc07af6ba26bb7c13d39d272ee725
font_02_sfnt_off0000f576.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF576 17440 bytes
SHA-256: 03feb44a32cc5ff1ca0c68c99caeaf836f65b2ef7f29e2f2b4fc9957036a732e

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