Malicious PDF — malware analysis report

Static analysis result for SHA-256 a35ed99472c3cd7b…

MALICIOUS

PDF

67.9 KB Created: 2021-07-19 06:54:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 6807ca72a0c7183c75ef8740e8f6dc56 SHA-1: 3422354e2badb9c29215eb6d7760a51013bf252e SHA-256: a35ed99472c3cd7b67b482e43bc1424b274d52f4d3c5765c0ed7899dee884d0d
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs, many of which point to compromised WordPress sites. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests malicious intent, likely to lure users to phishing sites or download further malware. The file's structure as a link farm on potentially compromised infrastructure supports a phishing or malicious redirection attack pattern.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4829

Heuristics 5

  • 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.
  • 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://electrabicycles.pl/app/webroot/uploads/file/16259147955331.pdf In PDF document text
    • http://classicalgardenfountains.com/uplds/file/noxedopa.pdfIn PDF document text
    • https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/dlutib658amigitrr4eqrgfi30/36808039403.pdfIn PDF document text
    • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/f6e3varfh74vtq930dg5mvkkop/30263497982.pdfIn PDF document text
    • http://pamatudarbai.lt/ckfinder/userfiles/files/93156259165.pdfIn PDF document text
    • https://hobbes-group.com/upload/files/darawalilajofaronejowe.pdfIn PDF document text
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606f8bc2e8b99---65406383245.pdfIn PDF document text
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160743a7a4b0bd---27516617729.pdfIn PDF document text
    • https://tehnol.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16084a1d2f0d9c---zumedepi.pdfIn PDF document text
    • http://parejalecaros.com/adjunto/upload/fck/files/fokuzedexabideziwar.pdfIn PDF document text
    • https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/9233ff903057db057fa8492e8df40601/45821267889.pdfIn PDF document text
    • http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/7476b36878869917209b456c3ab2f36a/gorumal.pdfIn PDF document text
    • http://changdahk.com/upload/13582641790.pdfIn PDF document text
    • https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/0f6074b622469378dc5db3b0248cfb95/28472900579.pdfIn PDF document text
    • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606f6824a9e78---debenura.pdfIn PDF document text
    • http://thebrownsfamilyreunion2008.com/clients/81208/File/13341003916.pdfIn PDF document text
    • http://dental1970.com/clients/5/52/52cfbc2c58cc98a1938bca6351e90795/File/jibazowabofetazusefiwozeg.pdfIn PDF document text
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d98a009c37---18913222535.pdfIn PDF document text
    • http://jkmdc.com/aversystem.com/userfiles/file/ruzivuponejajesobepi.pdfIn PDF document text
    • http://americanpetrochemicals.com/customers/CMS-IMAGES/file/21892008422.pdfIn PDF document text
    • http://cheers-gifts.com/userfiles/gojapunededejifofeg.pdfIn PDF document text
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081e4536dcd0---pagijemexipepo.pdfIn PDF document text
    • http://uticahighclassof78.com/clients/8/89/89c70e22fe5ad1405280b455f64975d7/File/tetazer.pdfIn PDF document text
    • https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/7918bedce9fcd81db679f081f276cda7/vogudodumiderimupu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=2+month+old+beaglePDF link annotation

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