Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed769de0a3a2f724…

MALICIOUS

PDF

103.8 KB Created: 2021-09-08 03:26:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 436740365e3b80ba35903bc8fffa457b SHA-1: bc482c4c3888de44f8aac89e17d8ca96a951a0d0 SHA-256: ed769de0a3a2f724e66a9d3fac9a66b8a9dee1a42d24b69330249661c613f559
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous external URIs and links to compromised WordPress sites, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with attempts to exploit users by masquerading as legitimate documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://nomylo.ru/uplcv?utm_term=rental+lease+template+pdf PDF link annotation
    • https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16114a5971e64d---56366833857.pdfIn PDF document text
    • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ded2e0fec3---lisur.pdfIn PDF document text
    • http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607ab5b0796d5---gugixop.pdfIn PDF document text
    • https://hopefor.today/wp-content/plugins/super-forms/uploads/php/files/b93be4576dd4d7cf91871f539df24541/58734670056.pdfIn PDF document text
    • https://domilot.com/uploader/files/gilolof.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/161167c2aba54e---bonamogusesipakuse.pdfIn PDF document text
    • https://rumahbaruku.com/contents/files/loliwigojos.pdfIn PDF document text
    • http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612aa398ea482---kotikenolubo.pdfIn PDF document text
    • https://jkmart.net/FCKFiles/File/kiwifagaxasazuwip.pdfIn PDF document text
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ceb4630c488---73334283731.pdfIn PDF document text
    • http://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/160a457baedfd0---lavaderisubawu.pdfIn PDF document text
    • http://yangpupark.com/uploadfile/files/tusamokufivipijip.pdfIn PDF document text
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8e8c698760---40188819427.pdfIn PDF document text
    • https://wccia-vastu.com/wp-content/plugins/super-forms/uploads/php/files/2cb49192716f7863847a0d0ef77bbdeb/pesotaboxuwupejoraruzusor.pdfIn PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abcbb56fd61---pewajimunodigepugutud.pdfIn PDF document text
    • http://flirtproducties.nl/ckfinder/userfiles/files/mubozaliwotile.pdfIn PDF document text
    • http://rasciindia.com/firetech/ckupload/files/76524293458.pdfIn PDF document text
    • https://chefinhogourmet.com/wp-content/plugins/super-forms/uploads/php/files/d332c2d8b499f3658147a1e74da98563/resojo.pdfIn PDF document text
    • https://indacphuc.com/wp-content/plugins/super-forms/uploads/php/files/qmvh6fjpdfnmh6ka6lkcibfv2h/13939083956.pdfIn PDF document text
    • http://asianaccounting.com/admin/fckeditor/userfiles/file/5737860795.pdfIn PDF document text
    • http://ohadalegistrocbarter.com/ckeditor/uploads/files/runuzogisazizubo.pdfIn PDF document text
    • https://www.hdontheroadnapoli.it/wp-content/plugins/formcraft/file-upload/server/content/files/16076f99c30d07---tixabetipi.pdfIn PDF document text
    • http://sztarmedia.hu/_user/file/99488953914.pdfIn PDF document text
    • http://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160aada28b49f6---6035788961.pdfIn PDF document text
    • https://cor.org.ar/wp-content/plugins/super-forms/uploads/php/files/6j217ei78tnut15ig44csn78i6/vumawosopanisigo.pdfIn 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://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_off00012eb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EB3 19672 bytes
SHA-256: 0ae3020f6c7d2ab3bbaabdcb95051b20c1d629922e7805d76f5745021c9eed08
font_01_sfnt_off000161f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x161F7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00017a0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17A0E 10392 bytes
SHA-256: 390f64acaa0af3827f48325c127cdf8f90f41877a641cd670bb35086e4aac5bf

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