Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ba1e526c89d3419…

MALICIOUS

PDF

54.5 KB Created: 2021-07-23 21:14:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 12845557bafd332b4448f7b8555e876f SHA-1: d5d26fa379fd1bbd5c0bd8b2716a0aa12616541b SHA-256: 5ba1e526c89d34197cb4d121bd04bc71f2195f6a049f53e29b7a18e28b3a491e
154 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs pointing to compromised CMS uploads and disposable hosting, likely to redirect users to phishing or malware distribution sites. No scripts were extracted, and the document body was unreadable, but the heuristic firings strongly suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7438

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 https://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/e3ah9hlv447s2c4che4lst1i38/91288259961.pdf In PDF document text
    • https://nceptionsolutions.com/wp-content/plugins/super-forms/uploads/php/files/b48dbd9e67041a02743c53aae41e3e2b/12211196511.pdfIn PDF document text
    • http://msamerica.net/clients/873634/File/47210169926.pdfIn PDF document text
    • http://1959blackshirts.com/clients/866684/File/86176316994.pdfIn PDF document text
    • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1db8e8b503---lubasuzitinivigokefaza.pdfIn PDF document text
    • https://www.escon.it/wp-content/plugins/super-forms/uploads/php/files/3acfdeb0550f4a3a42c13cdb2c274f3a/zemeramubazavedabig.pdfIn PDF document text
    • https://truck-diagnostic.ru/wp-content/plugins/super-forms/uploads/php/files/87848d1f1e4da2a0235f474200caf862/siwomefalazomipurez.pdfIn PDF document text
    • http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609702390ba36---fupakifudek.pdfIn PDF document text
    • http://www.tobywells.org/media/fckdir/file/vapap.pdfIn PDF document text
    • http://mwflower.com/upimagesfile///ziduwizobirik.pdfIn PDF document text
    • https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/1rh77s8ffb1ak7ar8seuvpvrep/87466095470.pdfIn PDF document text
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5eedbaa9b1---jisuxebopanimilegowugig.pdfIn PDF document text
    • http://ganan10.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160a1d4952fd34---83687627172.pdfIn PDF document text
    • http://studiogiovannone.com/userfiles/files/lajegamubala.pdfIn PDF document text
    • https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160833b9eb4fb1---43302835847.pdfIn PDF document text
    • https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4103475af8---12527603360.pdfIn PDF document text
    • https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160907f9805a8d---10358047634.pdfIn PDF document text
    • http://el-system.jp/uploads/2012/files/buxifusosejus.pdfIn PDF document text
    • https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/kbvabfrge2i5l4c8dpll3rnbo2/53459432907.pdfIn PDF document text
    • http://phenix-security.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607a05ba3d1a5---wiremapexedojafamiwemuro.pdfIn PDF document text
    • http://rolmech-strzelno.pl/Upload/file/32221675433.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=how+to+remove+bottom+of+keurig+2.0+water+filterPDF link annotation

Open this report in the interactive analyzer, or submit your own file for analysis.