Malicious PDF — malware analysis report

Static analysis result for SHA-256 1acd95b7d2f33ac8…

MALICIOUS

PDF

62.3 KB Created: 2021-09-20 20:04:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 708adc369974e037d5df30ca43791863 SHA-1: 457e0cbf0b8e9b958369e6273df04c0b6a79d1e5 SHA-256: 1acd95b7d2f33ac86b1cd310e7b0c22559eca5ae636589f8ef12dac20ceb0a54
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a link farm with numerous URLs pointing to various domains, many of which are hosted on disposable or compromised CMS platforms. The ClamAV detection and ML classifier indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the structure and URL patterns suggest it's designed to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6040

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 http://king-pro.com/userfiles/files/refopuvonopubomum.pdf In PDF document text
    • http://cmtl.in/uploads/userfiles/file/file/sosoxowitozozoxumaxizudim.pdfIn PDF document text
    • http://eugensa.lt/app/webroot/uploads/userfiles/files/32314963305.pdfIn PDF document text
    • https://owop.challengersports.com/userfiles/files/52927661760.pdfIn PDF document text
    • https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/95e06ab24f4c17c2407a790e4fde17b8/84825112778.pdfIn PDF document text
    • https://carlojans.com/cms/file/20764745343.pdfIn PDF document text
    • https://simondaulte.com/ckfinder/userfiles/files/78000500812.pdfIn PDF document text
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/161397ef6a629e---46791767056.pdfIn PDF document text
    • http://xn--80aadq3ae7aa5k.xn--p1ai/upload/file/remisinan.pdfIn PDF document text
    • http://achwvs.love-mrt.com/upload/files/tezale.pdfIn PDF document text
    • http://abwgulfport.com/uploads/files/gedegizusifufafo.pdfIn PDF document text
    • http://ms-beauty.com/ckfinder/userfiles/files/luvagulatomuv.pdfIn PDF document text
    • http://arsvet.ru/img/upload/tidevokakaj.pdfIn PDF document text
    • http://zs-oilfieldequip.ru/d/files/88749824947.pdfIn PDF document text
    • https://confeccionesruiz.cl/UserFiles/File/74403266991.pdfIn PDF document text
    • http://wimborst-ceramics.nl/public/view/upload/fckeditor_images/file/39129862041.pdfIn PDF document text
    • https://highrise.pl/file/91333976295.pdfIn PDF document text
    • http://modernplating.com/userfiles/file/33223323566.pdfIn PDF document text
    • https://pastelbuilders.com/userfiles/file/loweketabopa.pdfIn PDF document text
    • http://phupmirpol.pl/userfiles/file/8744834657.pdfIn PDF document text
    • https://idroilektriki.gr/files/file/25245697572.pdfIn PDF document text
    • http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137d4254828f---80623289886.pdfIn PDF document text
    • http://transbur.ru/admin/ckfinder/userfiles/files/16224372588.pdfIn PDF document text
    • http://www.colormotion.cz/UserFiles/file/kozopavanebuwopun.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=friv+games+bad+ice+creamPDF link annotation

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