Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a0dd4a8ed2babbc…

MALICIOUS

PDF

99.9 KB Created: 2021-08-19 12:19:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 286a2b5c7a800d5db63233bac5e88260 SHA-1: 29a874c0eb9091106ba4fe42070ce259b13cefb1 SHA-256: 8a0dd4a8ed2babbc7d0cf4822dfb98b921784e289a2de32d8fbc4006dac8c5b9
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript, which is often used to redirect users to malicious websites or download further payloads. The heuristics indicate the PDF acts as a link farm, pointing to numerous compromised WordPress upload directories and disposable hosting sites, suggesting an attempt to distribute malware or phish for credentials. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8976

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://www.scsi.coop/wp-content/plugins/super-forms/uploads/php/files/80c9266ddf48d817d94c56f02cd8a2e1/94655604683.pdf In PDF document text
    • http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/c723ku2gsge8smlecmehj76t44/rafemu.pdfIn PDF document text
    • https://playgametoday.ru/wp-content/plugins/super-forms/uploads/php/files/0cf14faeedfc0585514902aa288ce90d/40714176483.pdfIn PDF document text
    • http://lignumweb.com/site/webroot/uploads/files/busuxijedowir.pdfIn PDF document text
    • http://elcwma.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/jajuwavaxenipozowufuzon.pdfIn PDF document text
    • https://atpl.aero/ckfinder/userfiles/files/kidekuxokarofefa.pdfIn PDF document text
    • https://www.elektrobetrieb-scholz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160aeab659f80a---puridizufewilem.pdfIn PDF document text
    • https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/rchnct3f5ir6liui1hsfe21k1b/gizoxibujazasexo.pdfIn PDF document text
    • http://autoshiftbid.com/fckeditor/userfiles/file/82637342959.pdfIn PDF document text
    • https://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/491f59c78642156db10d8e62ffb00c37/24850724865.pdfIn PDF document text
    • https://aonetreks.com/uploads/file/58289809969.pdfIn PDF document text
    • http://fbchitchcock.org/clients/8/8b/8bdff38a390027835eb24981312b950c/File/79280945610.pdfIn PDF document text
    • http://krevue.cz/UserFiles/File/lepapipaf.pdfIn PDF document text
    • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609e27ebea981---tunowibot.pdfIn PDF document text
    • http://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f3f206534c2---piluje.pdfIn PDF document text
    • http://www.fashiongale.ro/userfiles/files/dojududewageromupuzukug.pdfIn PDF document text
    • https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/b41acad9e95bb78053b291c84a2421a2/93698257659.pdfIn PDF document text
    • http://mmprogetti.it/userfiles/files/52770437024.pdfIn PDF document text
    • http://agriturismofattorialucciano.com/ckfinder/userfiles/files/41947308050.pdfIn PDF document text
    • http://toeicspeaking.net/_UploadFile/Images/file/83816331383.pdfIn PDF document text
    • http://mcelvain2020reunion.com/clients/b/b5/b5167212b805812c9439186484f80f5e/File/vagokerakilak.pdfIn PDF document text
    • https://corumosmanlimakina.com/js/ckfinder/userfiles/files/66829062949.pdfIn PDF document text
    • https://banghenails.com/upload/file/84987247022.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/13574707054.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=deltora+quest+lake+of+tears+pdfPDF link annotation

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