Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d5290c6d6f52845…

MALICIOUS

PDF

47.8 KB Created: 2021-09-10 05:04:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 01ca4719e3888e218be107c5033cb0af SHA-1: 0fb3b589a0a5c260ee5d6b3e76bfdfd5b2fddcb4 SHA-256: 9d5290c6d6f5284577c75ac5c3cc3400c8745cd069b0996048d8a993e1649f83
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF contains a link farm pointing to multiple compromised WordPress sites and other disposable hosting, which in turn host more PDF files. This suggests the document is designed to lure users into downloading further malicious content, likely for phishing or malware distribution. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly supports this malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5533

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://eastmangroup.org/ckfinder/userfiles/files/jejixizojifilevar.pdf In PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/39d99db1adccd7bd7115375569b30492/8772496418.pdfIn PDF document text
    • https://8cj2aja7-8mxb.com/contents/files/totedarudodokufuxazarasap.pdfIn PDF document text
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/1612f001fae28c---15061991703.pdfIn PDF document text
    • https://thehouseproduction.net/file/pitosexufutezexupuder.pdfIn PDF document text
    • https://steammining.com/userfiles/file/zolizawufujolapevuzakitut.pdfIn PDF document text
    • https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/156590a609a70864ec87309d445a9f4c/30575204253.pdfIn PDF document text
    • https://n-zvuk.ru/upload/file/46584502180.pdfIn PDF document text
    • https://micsys.in/userfiles/file/guborekorakirakelelor.pdfIn PDF document text
    • http://descanso.verareyes.com/ckfinder/userfiles/files/3814682287.pdfIn PDF document text
    • http://randoquad72.fr/userfiles/file/pabakukuziwekeduju.pdfIn PDF document text
    • https://www.infratechgroep.nl/wp-content/plugins/super-forms/uploads/php/files/645c6fa6b12a8be7ed49c59cd56ad0af/3227995350.pdfIn PDF document text
    • https://alpinismbihor.ro/app/webroot/files/userfiles/files/75642492083.pdfIn PDF document text
    • https://k31szmq42-nu28.com/contents/files/7727091237.pdfIn PDF document text
    • https://www.ojchamber.com/ckfinder/userfiles/files/35906300864.pdfIn PDF document text
    • https://fa-vietnam.com/webroot/img/files/woxajitiduzuvitepu.pdfIn PDF document text
    • http://varosom.hu/userfiles/files/35304242528.pdfIn PDF document text
    • http://ebd.su/UFD/7623/files/vumutuluxodipavusaluxu.pdfIn PDF document text
    • http://obkladlazby.cz/userfiles/file/43945632603.pdfIn PDF document text
    • http://www.trackls.com/application/ckeditor/ckfinder/userfiles/files/89013533406.pdfIn PDF document text
    • https://gonguyenkhoi.vn/upload/files/36265192070.pdfIn PDF document text
    • http://3gr-group-com.gbintl.com/ci/userfiles/files/gotebomisefo.pdfIn PDF document text
    • https://soechi.com/userfiles/file/ratux.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=free+android+password+removerPDF link annotation

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