Malicious PDF — malware analysis report

Static analysis result for SHA-256 14ebe97fb6b16caa…

MALICIOUS

PDF

88.5 KB Created: 2021-07-03 09:12:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 0d460167c50db4c05b4c64c3e921e070 SHA-1: e37aaf7953d7ddfa2c19a17e40ab9b7159f170de SHA-256: 14ebe97fb6b16caaa79a6476ad75ef577ee6ced0ddccbae30e2ce8c64d5b225a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier with high confidence. It contains numerous links to external websites, many hosted on compromised WordPress sites or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of external URI heuristics and link farm indicators strongly points towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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.
  • 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://allytemp.ru/uplcv?utm_term=riddle+me+this+with+answers PDF link annotation
    • http://ekonopuntos.com/campannas/file/tajakej.pdfIn PDF document text
    • https://aftaplan.com/works/peepsparty/html/upload_files/file/74291735670.pdfIn PDF document text
    • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/k696v6futvasejpe9tm048t5t0/20441369479.pdfIn PDF document text
    • https://dubigroup.com/admin/fckeditor/editor/filemanager/connectors/upload/file/wezejiboso.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/0fada3b16250fd1ae09a2f138e218456/91364781917.pdfIn PDF document text
    • https://cosalesrep.com/wp-content/plugins/super-forms/uploads/php/files/00f38fc2e02ac7b3218ba2eb848f1e8f/zurazozix.pdfIn PDF document text
    • https://gradeagroup.com/wp-content/plugins/super-forms/uploads/php/files/43gh8gite4mkl0hhovgoug01vj/subigivobikobarof.pdfIn PDF document text
    • https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608cbca727daa---kadiwigak.pdfIn PDF document text
    • http://lncxjzxxw.com/upload_fck/file/2021-6-23/20210623121606795364.pdfIn PDF document text
    • https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/160881cdb805ec---91254428826.pdfIn PDF document text
    • http://www.allatpatikapecs.hu/images/file/xapekokojusapu.pdfIn PDF document text
    • http://madiran-cruduparadis.fr/ckfinder/userfiles/files/84220654310.pdfIn PDF document text
    • https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609622cbed0e0---88891373370.pdfIn PDF document text
    • http://gayaarchi.com/userfiles/file/20210525092824.pdfIn PDF document text
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bf9d611265---28613623414.pdfIn PDF document text
    • https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/l65d8v2bltngf7bdc941dk34g1/tifadefapot.pdfIn PDF document text
    • https://accesoriosalmayor.com/images/userfiles/file/saterawonifezirejonavedo.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16098b102c75cb---pedabefubis.pdfIn PDF document text
    • https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160872a90177cc---mosado.pdfIn PDF document text
    • http://sip7.online/wp-content/plugins/super-forms/uploads/php/files/cf19eb4be024a3b76ccd54075128ca28/nixivulizaxuxudefikeluk.pdfIn PDF document text
    • http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/e7255a656bbdcf8ec2361667a67379d2/vixap.pdfIn PDF document text
    • http://solarexperten.ch/fckeditor/editor/images/file/36102418586.pdfIn PDF document text
    • http://phanphoiongnhuahoasen.vn/upload/files/52397731721.pdfIn PDF document text
    • http://tgtech-auto.com/userfiles/file/76833327207.pdfIn PDF document text
    • 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_off0000f859.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF859 17108 bytes
SHA-256: 19233e779f62230507e454e34d5662625f92fc6725cc6d9747ed46dee99d8657
font_01_sfnt_off000124df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124DF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013cf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13CF6 10524 bytes
SHA-256: c56f1357be5b5acdb7ff4e358c395e4bd6b33d3d8ff41d4395b5cb0818bdb006

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