Malicious PDF — malware analysis report

Static analysis result for SHA-256 29f83832ca15a006…

MALICIOUS

PDF

58.6 KB Created: 2021-09-07 11:18:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: ac01c29e6f63be36a71d781c4ed7cafb SHA-1: 2d69c8a947a52c9b4e32d8cb3feca2f7c09d0ed3 SHA-256: 29f83832ca15a0062badb1e6379a2e774c2d45f4afdd41cb33de60cdea5e59b7
124 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by ClamAV, specifically 'Pdf.Phishing.Trojan'. Static analysis reveals it functions as a link farm, containing numerous URLs pointing to other PDF files hosted on various domains. Several of these domains appear to be associated with compromised CMS uploads, suggesting a tactic to distribute further malicious content or phishing lures.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3101

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://ahlhy.com/uploads/file/011533479353.pdf In PDF document text
    • http://sakurahoaanhdao.com/webroot/img/files/xuxobifopojiwebu.pdfIn PDF document text
    • http://xn----itbbfrdrdbd4bgy6gi.xn--p1ai/webroot/files/files/25500122814.pdfIn PDF document text
    • https://shibbirs.com/media/files/kefidevu.pdfIn PDF document text
    • https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/904642c55c54d2898709d66770c27a59/7625746589.pdfIn PDF document text
    • http://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/1612cb1b854644---masoribufopesi.pdfIn PDF document text
    • https://cungcapthitdetuoi.com/app/webroot/files/images/pages/files/93821774833.pdfIn PDF document text
    • http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/160991a73c77fe---dikigo.pdfIn PDF document text
    • http://4998horo.gmmwireless.com/contents/files/detaxepafuposolebofomuw.pdfIn PDF document text
    • http://solamsys.com/userData/board/file/wesogadoxisulilu.pdfIn PDF document text
    • http://musikpark-live.de/userfiles/file/bijalejesazefu.pdfIn PDF document text
    • https://harkakotony.hu/UserFiles/file/69774713354.pdfIn PDF document text
    • https://mountmoriahcamp.com/media/68773187377.pdfIn PDF document text
    • http://rracc.com/file_media/file_image/file/betosavafuveziromerofoxo.pdfIn PDF document text
    • https://www.pepinieres-gey.fr/ckfinder/userfiles/files/retujojumivuxos.pdfIn PDF document text
    • https://autosaloncenter.com/uploads/file/xoxavasiwasipoj.pdfIn PDF document text
    • http://www.lightingandhvacexpo.com/wp-content/plugins/super-forms/uploads/php/files/8091125c67285e3251d2c2faadf1622b/boruz.pdfIn PDF document text
    • http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160776d27a4216---44767709321.pdfIn PDF document text
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607481b45d125---57699877125.pdfIn PDF document text
    • http://feynburg-uhren.de/uploads/laxoradutojamukagina.pdfIn PDF document text
    • https://madame-tina.com/ckfinder/userfiles/files/10895539668.pdfIn PDF document text
    • http://stamforgtechnologies.com/uploads/nerajepaz.pdfIn PDF document text
    • https://thesmithgrouphouston.com/wp-content/plugins/super-forms/uploads/php/files/b44733aab59fc485e0d8bb7c3806af2b/zinakibovomeb.pdfIn PDF document text
    • https://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160f3512a2180d---putuzak.pdfIn PDF document text
    • http://www.consorcio.edu.pe/wp-content/plugins/formcraft/file-upload/server/content/files/1609edc982cad4---misabalefokufuwelunukugex.pdfIn PDF document text
    • https://babetravelling.com/ckfinder/userfiles2/files/9541713402.pdfIn PDF document text
    • http://www.akutrans.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c4ff6cb25b---78393966154.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=novela+policial+pdfPDF link annotation

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