Malicious PDF — malware analysis report

Static analysis result for SHA-256 11bd7b08f14eb394…

MALICIOUS

PDF

52.2 KB Created: 2021-09-04 07:22:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 9bd461b0523d03c6417ef7a805ed6b6b SHA-1: 62e77fcfd3aaf4b32d6ba9f8ecca19fe3852abf0 SHA-256: 11bd7b08f14eb394945c6f14d02ad4b86265c4da0769b5e7d66fef632f63bb6e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links, many hosted on compromised WordPress sites, which likely serve as a link farm to direct users to malicious content. The presence of embedded URLs and the nature of the heuristics suggest a phishing or redirection attack, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6164

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.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608abee4e5d89---gafegirikoturavidi.pdf In PDF document text
    • https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/483951a38b70e36aaaab3b6d333910dd/49865206776.pdfIn PDF document text
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/1606ce8d4f2574---jopitagupugolos.pdfIn PDF document text
    • http://www.mueblesgamez.com/ckfinder/userfiles/files/8530163447.pdfIn PDF document text
    • http://hongdacable.com/d/files/kosikepavuxojajebo.pdfIn PDF document text
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/at2k1f8204qi2i585pcep5u1kq/16740860851.pdfIn PDF document text
    • http://fence-alarm.com/userfiles/files/99345165127.pdfIn PDF document text
    • https://alamansyria.com/userfiles/file/gikamipalimixisi.pdfIn PDF document text
    • http://graphicon.hu/wp-content/plugins/formcraft/file-upload/server/content/files/1606f6331195f7---71940857966.pdfIn PDF document text
    • https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/89b7cd84b66fcea6ffe018993a536708/40730565072.pdfIn PDF document text
    • http://spreewaldatelier.de/img/editor/file/zigixotoru.pdfIn PDF document text
    • https://www.reparaciondebomba.com.ar/wp-content/plugins/super-forms/uploads/php/files/an767nstt5js058rerajvba4n3/65392027354.pdfIn PDF document text
    • http://travelci.ru/ckfinder/userfiles/files/82511491094.pdfIn PDF document text
    • https://miaousland.fr/ckfinder/userfiles/files/44552927774.pdfIn PDF document text
    • http://webscape.co.bw/wp-content/plugins/formcraft/file-upload/server/content/files/1607ef752b21dc---jilusepizobewanula.pdfIn PDF document text
    • http://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609da2bae8730---jewogaxadipimobex.pdfIn PDF document text
    • http://techbis.pl/files/file/68250311091.pdfIn PDF document text
    • https://burkina-businessschool.com/business_school/uploads/file/wosigezixepexakunipam.pdfIn PDF document text
    • http://mitsubishilongbien.vn/images/ckeditor/files/wagalolijalibifov.pdfIn PDF document text
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160c8a6e25ef98---74500616075.pdfIn PDF document text
    • https://szabobuszberles.hu/files/files/kepuzixobulek.pdfIn PDF document text
    • https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/03ea903c53383590e2d3a3cadbab158c/11956941291.pdfIn PDF document text
    • https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607338e52c0fc---fetifosuwatewaboti.pdfIn PDF document text
    • http://yaqeen-eg.com/userfiles/file/20174638666.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=gujarat+state+map+pdf+downloadPDF link annotation

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