Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddcb6cf870f4a01f…

MALICIOUS

PDF

64.0 KB Created: 2021-08-11 15:43:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: bf5e8c650c280aaaddccb4a61216e281 SHA-1: 6438370fd0564f7d0d2e6ac2c0005c97e99310c1 SHA-256: ddcb6cf870f4a01f25d849b460eef2da4bbb966763a73ef6d1d5344ac41c0693
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and ML classifiers. It functions as a link farm, containing numerous URLs pointing to potentially compromised WordPress upload directories. The primary purpose appears to be directing users to external, untrusted resources, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6403

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://smoothnomad.com/wp-content/plugins/super-forms/uploads/php/files/bam7pt1mp12hgc3cs6u4sk659q/lowovuk.pdf In PDF document text
    • https://www.picmephotoboothhire.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607e7a9f97cd1---52890505012.pdfIn PDF document text
    • https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/144c9e897428462b6b03d7726592d471/ganivunabekigirawex.pdfIn PDF document text
    • https://hophamthaibinh.com/upload/files/momokel.pdfIn PDF document text
    • http://ecbpolska.pl/wp-content/plugins/super-forms/uploads/php/files/0763b1906dfb9c9d87b19932f53a4e57/66305522436.pdfIn PDF document text
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a261123dc2---7835664513.pdfIn PDF document text
    • http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607f06ad30b2d---ruwagivamule.pdfIn PDF document text
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/qrsjup0jgcbprf5jent6umtp46/butuvatawazadesemenofipu.pdfIn PDF document text
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e68b9b741d---wugoxu.pdfIn PDF document text
    • http://reutlinger.pl/userfiles/file/retumibeladixivokevajo.pdfIn PDF document text
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16089aebf04dc8---88670989552.pdfIn PDF document text
    • https://renfrewareahealthvillage.ca/ckfinder/userfiles/files/54061821173.pdfIn PDF document text
    • https://cebrigantina.com/025-CEB/images-editor/file/juwaxixuximitobajizezij.pdfIn PDF document text
    • http://voxel-avocats.fr/uploads/file/40840328178.pdfIn PDF document text
    • https://lanna-flyingclub.com/ckfinder/userfiles/files/85617124543.pdfIn PDF document text
    • http://samilove-payitforward.com/clients/f/f9/f9b0b202ed5d2cb263a89f8a9bd08a94/File/72179835471.pdfIn PDF document text
    • https://dezsredstvompx.ru/wp-content/plugins/super-forms/uploads/php/files/7cda1483b159f48d51887c5dbf612f04/85159993819.pdfIn PDF document text
    • https://juvelyrikoscentras.lt/Files/file/palugesedogazo.pdfIn PDF document text
    • https://akarchlight.com/wp-content/plugins/super-forms/uploads/php/files/afe4e7c1b239826f29fc9ccfd8270b8f/gorefazafof.pdfIn PDF document text
    • https://lesura.net/userfiles/file/tegefalilugivib.pdfIn PDF document text
    • http://tara77.com/clients/46590/File/livugopu.pdfIn PDF document text
    • http://spalovnachemolak.sk/userfiles/file/60993834027.pdfIn PDF document text
    • https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/76a3d3a7f1974b95cbbedd11f5c7dbab/88584049114.pdfIn PDF document text
    • https://www.syah.org/wp-content/plugins/super-forms/uploads/php/files/e09511e358783f85a65d1493a77b75c5/kapusoguvejur.pdfIn PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d309d3375e5---gikepigosiraludewimukasu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=how+to+do+paper+ei+reportsPDF link annotation

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