Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d8c2f375f98c46c…

MALICIOUS

PDF

83.8 KB Created: 2021-06-26 09:04:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a8e84812f2f9b34a440262323d36f2df SHA-1: 2c52ea0bcd68cc52b5d5d2ae06790b9fc8095495 SHA-256: 0d8c2f375f98c46c3f76b2866579a234c494bf3f1365fc4bd32d72381e129b76
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains numerous links to external websites, many of which appear to be hosted on compromised CMS platforms, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 6

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://crysiq.ru/uplcv?utm_term=compare+and+contrast+primary+and+secondary+sources
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/2448f3d7674cfda33882fe3e485eed9b/nozunelexamevatorimigami.pdf
    • http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609cf5e74b8e2---witedos.pdf
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/084d9dc06b6a76feb810ad39df408df5/jewojirivuwe.pdf
    • https://otelnamore.com/wp-content/plugins/super-forms/uploads/php/files/b157db365a382b547d62ed93036ee601/xikigenurebow.pdf
    • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5c34dc956e---piwunut.pdf
    • https://traonguoc.vn/wp-content/plugins/super-forms/uploads/php/files/svcmjktiqfhh61dg7vk9l1u4s6/26769095917.pdf
    • http://hobbstownis100.com/clients/6/66/66141d04a4341350d76ae3a38785cb5a/File/kamirolanenera.pdf
    • https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/pabui3ah8jgcei97tbm5tds744/sufelotozikanogepupabi.pdf
    • https://mn-lawfirm.com/box/userfiles/file/91446965517.pdf
    • https://www.pal-kont.hu/wp-content/plugins/super-forms/uploads/php/files/c62c3316e2fc7733294a7d4dadf92308/waxemaraxidejuwu.pdf
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086bbb2b5244---texeluz.pdf
    • http://www.jindatunnel.com/up_files/file/94942978270.pdf
    • https://www.kadinlarsitesi.org/wp-content/plugins/formcraft/file-upload/server/content/files/16098bd811f9fd---38577488828.pdf
    • https://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/1a0a6f6f2a5cd8aae1fb7e90fdcd5ec2/mitewikixivakixofedimila.pdf
    • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9889761677---45974852686.pdf
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6c6da2e89e---wuriwonolatesonerip.pdf
    • http://xn----8sbnbd9chja.xn--p1ai/userfiles/file/golinefopelapaxorageruxo.pdf
    • https://anzmrrn.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608f8d40b6798---fumatufuzolalifimafepesig.pdf
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/5ac484f36ed4c36c06fa22e891e9729a/momiwulodituwikowapiwaxaj.pdf
    • http://broadviewlibrary.org/uploaded_bvlib/file/50078077002.pdf
    • https://livre-art.com/ckfinder/userfiles/files/juzalagemuvituxizi.pdf
    • https://fanaf.com/article_ressources/file/lebotodudazuxopuganarepab.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e60f.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE60F 16792 bytes
font_01_sfnt_off0000fe26.bin
99888db94b1de8d4f25002c2aa2d037b200bbb3d01dc2a05c8dd69f76ed66e16		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE26 10872 bytes
font_02_sfnt_off0001174f.bin
5ec200ecabf46af4f20e8acb8adcf60217d72b1b7ec162b59b758d3a35e42902		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1174F 16592 bytes

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