Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c60ed7aab612705…

MALICIOUS

PDF

57.5 KB Created: 2021-07-02 19:10:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 717ca7c40d0cad32d14e2779f2dd15fe SHA-1: 2ffdfd739871b6cd3c83a2d65937b22e397493a7 SHA-256: 6c60ed7aab612705dd3a7dc046192f088bd7c58061c5a765ace1334f8d7a4aa9
154 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, detecting it as a phishing trojan. The heuristics indicate it functions as a link farm, with numerous URLs pointing to compromised CMS upload directories and disposable hosting. These links are likely intended to lure users into downloading further malicious content or visiting phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5801

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://quinta.cl/upload/files/76557175821.pdf In PDF document text
    • http://sarljarry.fr/userfiles/file/sifimikutejazegawamida.pdfIn PDF document text
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/k69nluh90d8a8ncjo8mu19r5ja/1124498580.pdfIn PDF document text
    • http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/1608ed2555f034---97987670656.pdfIn PDF document text
    • http://pnmanagementsolutions.in/uploads/rojulobawaxikixi.pdfIn PDF document text
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c5d6fa7b20---44406351175.pdfIn PDF document text
    • http://lideparts.com/userfiles/file/1620921029.pdfIn PDF document text
    • https://accounting789.com/ThImg/file/rokuzejepedurilibugop.pdfIn PDF document text
    • https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/enb8scp25kivsd7nd57co098t5/vafawoxijunavagofafu.pdfIn PDF document text
    • http://www.restorationservice.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160dce62a870d7---51413900732.pdfIn PDF document text
    • http://maidnheaven.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094334d917f1---45575586918.pdfIn PDF document text
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1608693f5925a7---dekogusipevoraxodomojuxug.pdfIn PDF document text
    • https://encouragingmath.com/wp-content/plugins/super-forms/uploads/php/files/9cfdd121aa85b6d14e71879c6d423d0c/karunubudusujaw.pdfIn PDF document text
    • http://sugarfree-gelato.com/upload/file/10930036983.pdfIn PDF document text
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085693f7b526---24269157349.pdfIn PDF document text
    • https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/49a3047124d90aa216065d562aac17ab/tomutapa.pdfIn PDF document text
    • https://tourpon.kr/FileData/ckfinder/files/20210616_21C053EBD546622E.pdfIn PDF document text
    • https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/160c68327e5402---vovajedapejekowixoradikut.pdfIn PDF document text
    • http://kameleonhastanc.hu/files/file/67976497900.pdfIn PDF document text
    • http://www.assignproject.com/wp-content/plugins/formcraft/file-upload/server/content/files/160985f807f580---99876119918.pdfIn PDF document text
    • http://rana-international.com/userfiles/files/kogefesukowomix.pdfIn PDF document text
    • http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16080ca44081a7---40727857982.pdfIn PDF document text
    • https://menu2uplus.com/images/file/13980371955.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1607d95aec2bf5---kegudezopoweresedijadew.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=blow+fly+inPDF link annotation

Related samples 8

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