Malicious PDF — malware analysis report

Static analysis result for SHA-256 99e614faad750026…

MALICIOUS

PDF

60.0 KB Created: 2021-09-05 22:18:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: c89e578cafd91eab01c351a15ce92d94 SHA-1: 0bc9385e45d9c61ea503b74ed1cec903a688218e SHA-256: 99e614faad750026aead0fa01842833197f6da31803b215fd4d4b05190f4b43b
154 Risk Score

Malware Insights

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

The PDF document contains a large number of links, many of which point to compromised websites and disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to lure users to phishing or malware distribution sites. No scripts were extracted, and the document body was unreadable, but the link farm structure is a common tactic for distributing malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8774

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://shelton1961.com/clients/35589/File/85284560653.pdf In PDF document text
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/160db9b74dffb3---sivupezamoz.pdfIn PDF document text
    • http://aksaxena.com/bpms/includes/fckeditor_uploads/userfiles/file/kibovemozimukoxupinaluvow.pdfIn PDF document text
    • http://www.egavilanes.com/ckfinder/userfiles/files/53001243581.pdfIn PDF document text
    • https://abeess.com/userfiles/file/46950122452.pdfIn PDF document text
    • http://tv-kitchen.ru/files/files/pisuluxudovekajupelata.pdfIn PDF document text
    • https://gradeagroup.com/wp-content/plugins/super-forms/uploads/php/files/ln1iiupoo0cov5g8eepeafbth0/5815258908.pdfIn PDF document text
    • http://fashioneducation.ru/userfiles/file/19532998807.pdfIn PDF document text
    • https://www.m2asolutions.com/wp-content/plugins/super-forms/uploads/php/files/386f386738f0656b92f3d3e25fcab0aa/mesixebepezer.pdfIn PDF document text
    • https://ymvii.com/admin/upload/files/firezevu.pdfIn PDF document text
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/160a7320730209---70367260923.pdfIn PDF document text
    • http://kinocosmik.ru/sadm_files/1569592605.pdfIn PDF document text
    • http://bitite.lv/media/txt/122/file/jezawederofopaje.pdfIn PDF document text
    • http://museodegliarazzimarsala.com/userfiles/files/pudiwizodofesesaritipid.pdfIn PDF document text
    • https://moto-trend.cz/public/files/fck/file/58966470252.pdfIn PDF document text
    • https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610eeff546a9c---79904010633.pdfIn PDF document text
    • http://eska-lift.ru/userfiles/file/zokoxegademi.pdfIn PDF document text
    • http://crosswaysrecruitment.com/userfiles/file/getituk.pdfIn PDF document text
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/160858fad7b185---gasupesolarirobolop.pdfIn PDF document text
    • https://humble-brag.com/wp-content/plugins/super-forms/uploads/php/files/la6pgsac5nri1jflb02fuqq7gs/58574573691.pdfIn PDF document text
    • http://bulmarconsult.com/files/vubuvoxelonodugapavulupi.pdfIn PDF document text
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/160e83e0d5611c---20238684299.pdfIn PDF document text
    • http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/1608d457b58a3e---javup.pdfIn PDF document text
    • https://www.pal-kont.hu/wp-content/plugins/super-forms/uploads/php/files/93fef69b8d1e237c45d865d14f34c628/12901154975.pdfIn PDF document text
    • https://connect.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/9f3d6d01c21300a40a3eb696dd6bb67e/17430125239.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=medical-surgical+nursing+brunner+pdf+free+downloadPDF link annotation

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