Malicious PDF — malware analysis report

Static analysis result for SHA-256 f29124241e7a6e95…

MALICIOUS

PDF

64.0 KB Created: 2021-08-28 20:43:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: c9e244c500a1e6cc0071daa69c7117a0 SHA-1: 8673ec8f74a2282658e3c05129b17d3b16bbde91 SHA-256: f29124241e7a6e9559ab91ae024219368ae997adba58bc559bd9850da9681a6e
154 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to compromised websites or are hosted on disposable domains, suggesting a link farm designed to lure users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9131

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://aradovan.com/userfiles/file/megugogotuvanofegurowuma.pdf In PDF document text
    • https://saporidelletnastore.it/file/3146256918.pdfIn PDF document text
    • http://bluestandard.pl/ckfinder/userfiles/files/95238383987.pdfIn PDF document text
    • http://www.valathors.com/ckfinder/userfiles/files/bawavite.pdfIn PDF document text
    • http://ekolojikweb.net/upld/userfiles/file/mezibubevebevo.pdfIn PDF document text
    • http://villa-carlshorst.de/sites/default/files/file/muwabimugapitazafa.pdfIn PDF document text
    • http://lso-msm.fr/userfiles/file/wuvowuleseripej.pdfIn PDF document text
    • http://greenplanetnepal.com/userfiles/file/gipikuxi.pdfIn PDF document text
    • http://sp3siemianowice.pl/userFiles/files/89586147826.pdfIn PDF document text
    • http://xn--2vxr09c6mc.tw/CKEdit/upload/files/mivulikagejesupatipesuwu.pdfIn PDF document text
    • http://theonejsc.com/userfiles/file/15951570961.pdfIn PDF document text
    • https://study-go.info/wp-content/plugins/super-forms/uploads/php/files/c8ea7b5a18ea0d1a61f30c4b35a7dc3d/diludenomo.pdfIn PDF document text
    • https://samowar.ch/upload/file/35351144715.pdfIn PDF document text
    • http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/161196ef94b6e4---46536570183.pdfIn PDF document text
    • https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/8nidhaugaeqm314lskcgo95njn/7409333073.pdfIn PDF document text
    • http://vinag7furniture.com/app/webroot/files/editor_upload/files/32539296543.pdfIn PDF document text
    • http://nawooelcs.com/upload/userfiles/2021/08/files/210827212412.pdfIn PDF document text
    • http://www.zav-mito.si/wp-content/plugins/formcraft/file-upload/server/content/files/160aa401159b6f---83133774911.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/6d6ea05380947dd6ae3f3a09f9373128/66260021257.pdfIn PDF document text
    • https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094cbd76ff7a---51210224280.pdfIn PDF document text
    • https://nwdglobal.com/ckfinder/userfiles/files/kavigakerilapeser.pdfIn PDF document text
    • http://izdepskifamily.com/clients/1/1a/1adacdf247316bc4617b3617d965acc7/File/wadilipotebufi.pdfIn PDF document text
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/b166pk05dib0scntgp30gpqe86/dopejetafu.pdfIn PDF document text
    • http://jobsandhi.com/uploaded_files/userfiles/files/vuporel.pdfIn PDF document text
    • https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/jkflaq5cq31s8q5urpudbec1op/42983075598.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=boilermaker+interview+questions+and+answers+pdf+downloadPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8A8 17248 bytes
SHA-256: 56b55e35d15d2262e1bdb623dab3d0705c3c14beb7f61f2558f39cb4da915dd7