Malicious PDF — malware analysis report

Static analysis result for SHA-256 f87adb087934db8b…

MALICIOUS

PDF

212.3 KB Created: 2021-06-23 19:48:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 30167790f21aee901f355c0ba9f25b4a SHA-1: c5578090b94fa642d6430b597e41e81f3d6970d2 SHA-256: f87adb087934db8b95306bda240487f9b68cec540fb0392689829449cbd08cbd
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The document contains numerous links to external websites, many of which appear to be compromised WordPress uploads, suggesting a phishing or malware distribution scheme. The presence of embedded URLs and the overall structure indicate an attempt to trick users into downloading malicious content, likely for phishing purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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.
  • 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://krisoc.ru/uplcv?utm_term=cash+neurology+for+physiotherapists+pdf+download PDF link annotation
    • http://barrybusiness-crm.com/ressource/devis-photo/files/pebanexifovenujoxuji.pdfIn PDF document text
    • http://sahamit.net/userfiles/file/11377423297.pdfIn PDF document text
    • https://realestateconnect.biz/wp-content/plugins/super-forms/uploads/php/files/0v0m47b9oh8ioni7io1f37on74/46036743476.pdfIn PDF document text
    • https://www.indee-r.fr/wp-content/plugins/super-forms/uploads/php/files/f4d297476ee12e513316075dac703e67/93104380008.pdfIn PDF document text
    • https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/16073a03394757---31278939882.pdfIn PDF document text
    • http://allasclub.com/campannas/file/51154444813.pdfIn PDF document text
    • http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/obt1nrd415nmp6ogs39lp8rp40/kalopifegezeju.pdfIn PDF document text
    • http://fashioncenterpoint.com/wp-content/plugins/super-forms/uploads/php/files/0eee17664cad72e344e2e7dd66fb7549/lewiwojupememifu.pdfIn PDF document text
    • http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160788da40345c---muvez.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/5675a19dda596ec095a0dd5cf857ea18/sagolomurokoxanoximokopik.pdfIn PDF document text
    • https://fermuar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a28f1927057---bitojilukedokiruji.pdfIn PDF document text
    • https://vijyaiprismcrm.com/userfiles/files/mewupowixadalaj.pdfIn PDF document text
    • https://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/fdcoben6gkjdpuqopvqsc5a314/43857869081.pdfIn PDF document text
    • https://riondene.ch/img/uploads/file/lomofomasosagebafozadadu.pdfIn PDF document text
    • http://agataklimowska.pl/userfiles/file/geguzuginukibuwad.pdfIn PDF document text
    • https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c67fc681982---9601471224.pdfIn PDF document text
    • http://ebslang.net/_UploadFile/Images/file/jebodakuduripodev.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00030770.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30770 5404 bytes
SHA-256: 04ec0cea9706a95167e98b02211799bd853c61ef3e564245e9892e1f42002136
font_01_sfnt_off000319e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x319E1 11928 bytes
SHA-256: 9a26d2e57b123904f82178171b94b798574c9d8bc52f27dd9487c7c8bc2bc22e

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