Malicious PDF — malware analysis report

Static analysis result for SHA-256 b47e349f1c7c5b2d…

MALICIOUS

PDF

79.6 KB Created: 2021-10-19 16:38:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 9c0396c58192d7d538e2ca6c1b794b50 SHA-1: 7c24ed9c07fbe426a99e895e1da92d142ebee359 SHA-256: b47e349f1c7c5b2d0948fa7ff35ab5da6f28f72e560f13c5425e4e27b73ff6a7
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as a PDF containing a link farm, with numerous URLs pointing to potentially compromised websites or disposable hosting. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a malicious intent, likely to lure users to phishing sites or download further malware. No scripts were extracted, but the structure and URL patterns are indicative of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3594

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://oniceh.ru/uplcv?utm_term=how+to+get+to+netflix+account+settings+on+ipad PDF link annotation
    • http://dermatologomiguelgallego.com/miguel/fck/file/joxitu.pdfIn PDF document text
    • http://www.prunay-en-yvelines.fr/ckfinder/userfiles/files/poxikeledipeluburupu.pdfIn PDF document text
    • http://goldia.cz/data/file/25620082782.pdfIn PDF document text
    • http://korsorlampang.net/user_img/files/30553114855.pdfIn PDF document text
    • http://geasit.it/userfiles/files/jetodix.pdfIn PDF document text
    • http://ets-sptk.ru/pic/file/24130346020.pdfIn PDF document text
    • https://divinescience.in/userfiles/file/98356051043.pdfIn PDF document text
    • http://ecocj.com/userfiles/file/20210923000930.pdfIn PDF document text
    • http://weldingplaza.com/files/file/mirowev.pdfIn PDF document text
    • http://evopizza.lt/ckfinder/userfiles/files/tutiwefufikomiw.pdfIn PDF document text
    • http://xetaihyundai.net/upload/files/52713102210.pdfIn PDF document text
    • http://joshuadacosta.com/wp-content/plugins/formcraft/file-upload/server/content/files/16167786d61395---poxuzulabifujow.pdfIn PDF document text
    • http://onelove.cz/file/44750962059.pdfIn PDF document text
    • http://aibrpjoaae2.specialty-match.com/upload/files/fajimanogidakozozawe.pdfIn PDF document text
    • http://spbmedax.ru/sites/default/files/uploads/9949661895.pdfIn PDF document text
    • https://bienenaktuell.com/sites/bienenaktuell.com/files/file/41961812259.pdfIn PDF document text
    • http://ximangsongthao.com.vn/app/webroot/uploads/files/sozesasesuxuwizoza.pdfIn PDF document text
    • http://winecellarkeeper.com/ckfinder/userfiles/files/66975890273.pdfIn PDF document text
    • https://k-newsletter.com/ckupload/files/19772512806.pdfIn PDF document text
    • https://goez3.com/10005001208290177/ckfinder/userfiles/files/85309956676.pdfIn PDF document text
    • https://tanhaithanhvalves.com/quangcao/admin/file/femiribovibewesudaj.pdfIn PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614b1cb05ad3f---12300215668.pdfIn PDF document text
    • http://emilybarnes.com/DEVELOPMENT/VERSIONED/emilybarnes/trunk/sites/default/files/file/tikosefofokesekasub.pdfIn PDF document text
    • http://petukmahaaaraj.com/userfiles/file/46068252279.pdfIn PDF document text
    • https://braveathlete.net/geektic/files/rulodijuwerevomerisife.pdfIn PDF document text
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16158df491b48b---92801143511.pdfIn PDF document text
    • http://inannamsao.com/uploads/files/sozijubidawowuwudino.pdfIn PDF document text

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