Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d96b3a4addd368e…

MALICIOUS

PDF

88.5 KB Created: 2021-07-14 01:11:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 60d647a980d694e4e3aae5b59c72284f SHA-1: 192d4c27d8f65ac6ad0214bbb4090fabc765c165 SHA-256: 2d96b3a4addd368edacddfb8a478fa4aa218c8768f0990b66535908647351c4a
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a ClamAV detection for 'Pdf.Phishing.Trojan'. The document contains a link farm pointing to numerous external websites, many of which appear to be compromised CMS uploads. The primary attack pattern involves directing users to these external sites, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://stacjaregeneracja.pl/userfiles/file/11154299486.pdf In PDF document text
    • https://baoholaodong24.com/userfiles/file/39509631575.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/pujaliruwib.pdfIn PDF document text
    • https://pointsourcegroup.com/wp-content/plugins/super-forms/uploads/php/files/607f328857df30ec16a6bbee5a299210/juzadanivewiwexan.pdfIn PDF document text
    • http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a5743c4caf1---tepajaveresurodifinabeje.pdfIn PDF document text
    • http://macro-e.com/app/webroot/userfiles/files/kudonetegusekefebavusuw.pdfIn PDF document text
    • https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/2c1cf65846c59755a673a9ba766214fe/11638167266.pdfIn PDF document text
    • https://travels-ukraine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4639c02482---gusujabitodunofunuxi.pdfIn PDF document text
    • https://abofahed.com/userfiles/file/29443676718.pdfIn PDF document text
    • http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cfdc952cb3---mapilowakudikoxizewimaji.pdfIn PDF document text
    • https://dineflon.com//files/25995896720.pdfIn PDF document text
    • https://agentcctv.com/userfiles/file/ximaku.pdfIn PDF document text
    • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/160954d830dcc1---dugosujojevegomif.pdfIn PDF document text
    • https://burgas-remonti.com/userfiles/file/22009485165.pdfIn PDF document text
    • http://esenkardeslerinsaat.com/resimlerfiles/62780768645.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/9b8afe337189467ed59cf95eabaf3ffe/xorexogazivijeve.pdfIn PDF document text
    • http://gilendor.cz/userfiles/file/dasatonegazepome.pdfIn PDF document text
    • http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609f085f379e5---woluvoboroj.pdfIn PDF document text
    • http://nkcophs50threunion.com/clients/0/01/014062e559e26c1cf0711bcec4e573ae/File/pedivuvupejo.pdfIn PDF document text
    • https://fruzsiflame.hu/userfiles/file/xezusogubesabonugusasopo.pdfIn PDF document text
    • https://costabravas.com/uploads/localidades/files/48027607823.pdfIn PDF document text
    • http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16095704fc7fd5---32577487049.pdfIn PDF document text
    • http://nutranghongngoc.com/media/ftp/file/32159096679.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=dnd+5e+dungeons+masters+guidePDF link annotation
    • 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7EA 10780 bytes
SHA-256: 3c34a0468d4551ce8f2a3ab0dde657f593b792862017f24f10c3d34db1a240b1
font_01_sfnt_off0001008f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1008F 23492 bytes
SHA-256: 3bf09aad2f5da7265632d04b3ff03760203c316c5327273f0bda45a783949477
font_02_sfnt_off00013b0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B0F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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