Malicious PDF — malware analysis report

Static analysis result for SHA-256 f988307be8153fc8…

MALICIOUS

PDF

85.9 KB Created: 2021-09-20 16:33:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 4d3fc3da4231b87064ecb7056673a7ee SHA-1: af3525ff0f22d78e869a75611fb6b12bff3e4f6d SHA-256: f988307be8153fc80e31077488ee93e47f57287fa9d2b38ec6b062b2b9779498
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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
  • 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=android+vr+porn+games PDF link annotation
    • http://vakaruinzinerija.lt/userfiles/file/wanujabusenatobeb.pdfIn PDF document text
    • http://cgmorenanews.com.br/ckfinder/userfiles/files/64033150121.pdfIn PDF document text
    • https://bem-sa.com/img/file/betejidubutuvekomasi.pdfIn PDF document text
    • http://rayer.cn/d/files/98636638853.pdfIn PDF document text
    • http://ferramentabelleggia.it/public/file/rodopomekofazajusivotatep.pdfIn PDF document text
    • https://holocaustresearch.pl/nowy/photo/file/maranove.pdfIn PDF document text
    • https://promptcorporate.com/ckeditor/ckfinder/userfiles/files/13991397117.pdfIn PDF document text
    • http://bdsps.org/slbdavbatala/userfiles/file/90915098521.pdfIn PDF document text
    • http://balbu.hu/uploads/news/file/jatagodakavubipir.pdfIn PDF document text
    • http://morakothotel.com/file_media/file_image/file/rujesemoxadovetat.pdfIn PDF document text
    • https://acrgruppe.de/userfiles/file/gotawuwikexajip.pdfIn PDF document text
    • https://mcq-exambd.bdbabymart.com/app/webroot/ckfinder/userfiles/files/jivutukovomuro.pdfIn PDF document text
    • http://gadkowski.pl/repository/filemanager/file/18753755367.pdfIn PDF document text
    • https://intrastorg.com/userfiles/file/47951332387.pdfIn PDF document text
    • https://synodradomski.pl/userfiles/file/baxijojafikujulekek.pdfIn PDF document text
    • http://bio-scan.com/userfiles/file/xapupogupigagovuwivuv.pdfIn PDF document text
    • http://vdavloeren.be/userfiles/files/40469653670.pdfIn PDF document text
    • https://djecijagarderoba.me/userfiles/file/bibigepurojesal.pdfIn PDF document text
    • http://debseven.net/UserFiles/File/gitikizorugefi.pdfIn PDF document text
    • https://parquesanalbertohurtado.cl/ckfinder/userfiles/files/govelikuvid.pdfIn PDF document text
    • http://uticachemical.com/files/upload/files/30768140409.pdfIn PDF document text
    • http://ip-malkov.ru/uploads/files/suvevusinatizawave.pdfIn PDF document text
    • http://vet-spb.com/userfiles/file/34310576677.pdfIn PDF document text
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/161349f1f04489---47084412024.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_off0000edc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDC7 17172 bytes
SHA-256: 9737c403139748fdb3c2f8f02ec8a4ff7b4f73d498fae592192072e46a3da118
font_01_sfnt_off00011a30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A30 10636 bytes
SHA-256: a1e375d73ed7d254f11932a74253bb49979b4627299a06cde11cfcf8d2eed755
font_02_sfnt_off0001324a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1324A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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