Malicious PDF — malware analysis report

Static analysis result for SHA-256 847ecd809446df78…

MALICIOUS

PDF

98.7 KB Created: 2021-08-30 04:46:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-05
MD5: bf2dddb5abe8ae5873a62344967bbf3a SHA-1: 02cec82a6bfb3187741c2af2bf0a302334ff590d SHA-256: 847ecd809446df7804bff62db58a0da3c34ec1d24c2a7c2583a6e8414ab827e9
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://go2germany.ru/files/file/nosarofun.pdf In PDF document text
    • https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/f7521729ea540089493fdec48e0f35aa/poposenuzubuwogez.pdfIn PDF document text
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1370d7ef15---pezuzojufevoxamebakifi.pdfIn PDF document text
    • https://mollis.rs//files/3109421348.pdfIn PDF document text
    • https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160e003155d217---94682744031.pdfIn PDF document text
    • http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160dbca4f9150c---53921720792.pdfIn PDF document text
    • https://transmar.biz/ckfinder/userfiles/files/48242780953.pdfIn PDF document text
    • https://polskieplytki.com/wp-content/plugins/super-forms/uploads/php/files/0c67183ff9d1e9e5af66c2213efff644/zamodawuw.pdfIn PDF document text
    • http://goodwill.as/userfiles/file/ropovole.pdfIn PDF document text
    • http://bolt.fo/public_html/userfiles/files/90823047718.pdfIn PDF document text
    • http://michellenevinracing.com/FCKeditor/file/10257257257.pdfIn PDF document text
    • https://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/5aafa8f5c2c4c87a53e2f7cf939f7952/zezewonumu.pdfIn PDF document text
    • https://olterus.org/contents//files/bemalawavaturiwukeforo.pdfIn PDF document text
    • http://packamate.com/userfiles/zororipasokavop.pdfIn PDF document text
    • http://progin.swiss/ckfinder/userfiles/files/29665188816.pdfIn PDF document text
    • https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16110b3febd469---56386080666.pdfIn PDF document text
    • http://labmansour.com/app/webroot/js/ckfinder/userfiles/files/13404583663.pdfIn PDF document text
    • http://maility.pl_adresuserfiles/file/78033031320.pdfIn PDF document text
    • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074b7c264845---zojatadivefobegow.pdfIn PDF document text
    • https://xigmatek.com/upload/files/burapuforawotixixizeju.pdfIn PDF document text
    • http://gunjanjain.com/app/webroot/js/uploads/files/40463500297.pdfIn PDF document text
    • https://mimpi1pusat.com/contents//files/kenekuriresimujori.pdfIn PDF document text
    • https://archism.ru/uplcv?utm_term=an+essay+on+shaking+palsyPDF 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_off0001191b.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0001191b.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001191b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1191B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001312d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1312D 19516 bytes
SHA-256: 0e296f8f13741d75495c0345b04255aff2f00a5881bfad2f5b9409e1848313bc
font_02_sfnt_off0001645e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1645E 10520 bytes
SHA-256: 2bf5c89778bb2c6901652c84bbc44b339554ffb48b1da8076c7963895fd678eb