Malicious PDF — malware analysis report

Static analysis result for SHA-256 d07c33ebb4979bde…

MALICIOUS

PDF

78.1 KB Created: 2022-02-19 20:57:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-07
MD5: 662574f5222e1038b3af08d5ed5d5566 SHA-1: c001767da65b96e2c0dfd713ede03f559bf42b05 SHA-256: d07c33ebb4979bde8b03b4a0eb10447cd9150521215921ed0e666604714f77ac
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9904

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://kimansion.com/uploads/file/duluvotifivep.pdf In PDF document text
    • https://tahubunting1.com/contents//files/zebakawoj.pdfIn PDF document text
    • https://ourguarantees.com/userfiles/file/solawasero.pdfIn PDF document text
    • https://viveironativodevicosa.com.br/ckfinder/userfiles/files/42117903014.pdfIn PDF document text
    • http://sz-nuoyi.com/Upload/file/2021102306580652324.pdfIn PDF document text
    • http://screen.by/images/file/37106261847.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/603e3fc9e54cbde3d1cb009a52bb2809/22431787790.pdfIn PDF document text
    • https://coil.hk/upload/files/gomixupenokiti.pdfIn PDF document text
    • http://www.tsahimmongol.com/uploads/images/files/mexoxuwulajipovuwov.pdfIn PDF document text
    • https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/beadbb38807f007cba30dc20435a797a/pukulefewef.pdfIn PDF document text
    • http://cableesmaltado.com/d/files/natizimigas.pdfIn PDF document text
    • http://pmrs.ps/userfiles/file/rajesokujoguladojakoraru.pdfIn PDF document text
    • http://lhdrum.com/User_File/UpFile/file/20211105152638_amVraWdlbGlwZWR1bmFsZW4=.pdfIn PDF document text
    • http://gonvvama.net/filespath/files/20211004155709.pdfIn PDF document text
    • http://cluboutletmoto.net/campannas/file/65526953372.pdfIn PDF document text
    • https://www.xcelsus.de/wp-content/plugins/formcraft/file-upload/server/content/files/16162764172363---jomupijik.pdfIn PDF document text
    • https://www.quartzlock.com/userfiles/files/sibomafesorel.pdfIn PDF document text
    • https://www.albriug.com/static/editor/ckeditor/ckfinder/upfile/files/seteta.pdfIn PDF document text
    • http://vitalenzyme.com/uploads/fckupload/file/91500513879.pdfIn PDF document text
    • http://jlm-kg.com/uploads/file/75218613096.pdfIn PDF document text
    • http://dominopark.pl/public/upload/ckfinder//userfiles/files/22828211754.pdfIn PDF document text
    • http://www.ascondir.com.br/Gerenciador/kcfinder/upload/files/24769247471.pdfIn PDF document text
    • http://grandfiltr.com/files/file/66863355865.pdfIn PDF document text
    • http://wooshin.kr/uploaded/file/8279453060f6081a39617.pdfIn PDF document text
    • http://concept-art.nl/app/webroot/files/userfiles/files/nudekosovozuriferifegiv.pdfIn PDF document text
    • https://fenicia.uy/fenicia.com.uy/uploads/files/11324653851.pdfIn PDF document text
    • http://kapsalonindex.nl/images/uploads/mepuresaxape.pdfIn PDF document text
    • http://jandenzobv.com/image_uploads/file/99339057696.pdfIn PDF document text
    • http://testwebb.net/kcfinder/upload/files/80536458379.pdfIn PDF document text
    • http://www.gastroblanik.cz/upload/files/luwavurisozakizalegig.pdfIn PDF document text
    • http://tecsun-moscow.ru/docs/file/gaxogimewexibag.pdfIn PDF document text
    • https://xeroxexpres.cz/userfiles/file/97915423624.pdfIn PDF document text
    • http://www.videobezopasnost.ru/ckfinder/userfiles/files/19910661505.pdfIn PDF document text
    • http://yugreat.com/filespath/files/20220217075429.pdfIn PDF document text
    • https://loheb.co.za/XSRYdR1H?utm_term=high+school+chemistry+periodic+table+worksheetsPDF 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 extracted file (font_00_sfnt_off0000c849.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c849.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c849.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC849 18348 bytes
SHA-256: 02d3a7cad59d1805cc100b5500f52c05bcaad8c4abbd93be101af35aec2c93cd
font_01_sfnt_off0000f8a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8A7 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00010fc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FC7 11280 bytes
SHA-256: 865648ce9b3e7521ff09d7c8351b7a9cbd8a461c5787a5f340cc5f420f094185