Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc8d13b574066630…

MALICIOUS

PDF

62.5 KB Created: 2021-08-04 19:54:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: f46e044339ebe2ff12a732ad918bcb76 SHA-1: 74dbc7a351604cc1ba06c4e18010463e3ab9a265 SHA-256: cc8d13b5740666305141f58f95ffb229002caae2f34d8280b62ad114b52429b3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or malware distribution attempt. It contains numerous links to external websites, many hosted on compromised CMS uploads, suggesting it's part of a link farm designed to redirect users to malicious content. No scripts were extracted, but the presence of external links and the nature of the heuristics point towards a phishing or downloader attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9286

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://couvreur-hautdoubs.fr/internet_new/images_et_fichiers//file/65159635216.pdf In PDF document text
    • http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160802a52dabfe---relorewibowumegesufow.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/22126a25a7f040368c04d5fc4cc617a1/sewudufebudukafurenadanin.pdfIn PDF document text
    • https://truck-diagnostic.ru/wp-content/plugins/super-forms/uploads/php/files/5d62407e1c1b625bca7548cb0024e25e/xifolegalanibetezukeramil.pdfIn PDF document text
    • https://jamiatulbanat.in/wp-content/plugins/formcraft/file-upload/server/content/files/160730815a7b60---tivegavoritibivuleju.pdfIn PDF document text
    • http://wooshin.kr/uploaded/file/93049927460e16e428d5a6.pdfIn PDF document text
    • https://baongochoa.com/upload/file/98964398283.pdfIn PDF document text
    • http://ikhmongol.mn/ckfinder/userfiles/files/28412707078.pdfIn PDF document text
    • https://jiu-hang.com/upfiles/editor/files/78985517020.pdfIn PDF document text
    • https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b291de7a245---pijisewutosasowokalat.pdfIn PDF document text
    • https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/2895745136c6fc75394317b2c11dd674/15716786959.pdfIn PDF document text
    • https://elpollopaulino.com/cenavarra_userfiles/files/nilipop.pdfIn PDF document text
    • http://tevukasveza.lt/ckfinder/userfiles/files/norerutuwifosanizo.pdfIn PDF document text
    • https://www.glasswindowequipment.com/wp-content/plugins/super-forms/uploads/php/files/2d6c211993b4fac1a6e6493cd4ac1343/kuxebidobokenesijetagiliw.pdfIn PDF document text
    • http://abwferrellpkwy.com/uploads/files/xejurotikokimirakuxo.pdfIn PDF document text
    • https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/ee4e10e4de7e795162779da4a3ee1d41/39258293037.pdfIn PDF document text
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/7535129ea9d19bcf7ab92b3c19b84040/mipexojomubigasukifi.pdfIn PDF document text
    • http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d00b820bd7---rarijunobesugate.pdfIn PDF document text
    • http://hndgyl.com/v15/Upload/file/2021628244565424.pdfIn PDF document text
    • http://shriramashramps.org/userfiles/file/pozesumubogesodivaja.pdfIn PDF document text
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160abe143c4978---544545160.pdfIn PDF document text
    • https://ahha.az/userfiles/file/kisaletesixuzetozojevol.pdfIn PDF document text
    • https://autoandtruckrepair.net/nbloom/fckuploads/file/doxotija.pdfIn PDF document text
    • https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/3860e65150fbc5d81d3299f883d6f66c/zasemafotenatag.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=install+guest+additions+virtualboxPDF link annotation

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