Malicious PDF — malware analysis report

Static analysis result for SHA-256 14a68b29be1ede18…

MALICIOUS

PDF

95.7 KB Created: 2021-06-23 11:57:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 59ebebb59eee8dd5ceccd657e2aaa009 SHA-1: 20666d76c986ab6610fa8b92c61be27f77801f5c SHA-256: 14a68b29be1ede18d747fc7511319935732bb8145ced91961e4608f4ca92876a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was identified as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress upload storage and other disposable hosting. These links likely lead to phishing pages or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9016

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 http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607be5d2d0e7b---mosolo.pdf In PDF document text
    • https://footballsod.com/images/ck-uploads/files/45387545996.pdfIn PDF document text
    • http://archi1919.com/smlclub-files/file/besumisetaxugojusaloxuv.pdfIn PDF document text
    • https://hondamienbac.vn/userfiles/file/71442791340.pdfIn PDF document text
    • http://nhs1966reunion.com/clients/1/1c/1ca8f1639ee69cd7806809ed3bcda9bb/File/13217216738.pdfIn PDF document text
    • https://vetranhtuongmamnon.vn/wp-content/plugins/super-forms/uploads/php/files/64s7v5hd3h0i52vksq9rdqb254/58313982610.pdfIn PDF document text
    • https://ifacemount.com/wp-content/plugins/super-forms/uploads/php/files/nt59lt03rskhbph8u9ht3sjc6p/texugamunakonuzono.pdfIn PDF document text
    • http://maidnheaven.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607343669ad33---73983095933.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16092105e6b7dc---93165997946.pdfIn PDF document text
    • https://www.movingwithmagna.com/wp-content/plugins/super-forms/uploads/php/files/b395979fbd04dfa3ebf622a6031ac033/81201067894.pdfIn PDF document text
    • https://an-professional.ru/img/files/file/33716346391.pdfIn PDF document text
    • http://bmsorganica.com/userfiles/file/bubugevemumukeridemibukiw.pdfIn PDF document text
    • http://jtylek.pl/Upload/file/tisalevaz.pdfIn PDF document text
    • http://chupanhnoithat.vn/upload/files/diratorufag.pdfIn PDF document text
    • http://galluccifaibano.it/userfiles/file/95004354124.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/2bde95235fce5327b9bdef3c73ebb9c3/40747747987.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=introduction+to+econometrics+dougherty+pdfPDF link annotation

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

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