Malicious PDF — malware analysis report

Static analysis result for SHA-256 624d3a3291afec45…

MALICIOUS

PDF

112.5 KB Created: 2021-10-10 12:14:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-29
MD5: 3d1c4ede92104fea4c4533baf28dd0a7 SHA-1: 3d0119d11f6df8bc99707549bcd089e98603a9b7 SHA-256: 624d3a3291afec4596566a6650cc5af9badfa73020ecc8f6cac757a84ed944f8
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9889

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://inwebjor.ru/uplcv?utm_term=emoji+smiley+face+with+hearts PDF link annotation
    • https://bangvetthuong.com/luutru/files/rubixed.pdfIn PDF document text
    • https://frontivo.ro/userfiles/file/76768656069.pdfIn PDF document text
    • http://hanasushipickup.com/uploads/files/68140935748.pdfIn PDF document text
    • https://ovistar-dz.com/ckfinder/userfiles/files/38202959700.pdfIn PDF document text
    • https://deltarents.com/upload/ckfinder/files/27045901496.pdfIn PDF document text
    • https://slide-bearing.com/d/files/64509135871.pdfIn PDF document text
    • http://locthanhwindow.com/img_duhoc/files/fapuzuvozidotuv.pdfIn PDF document text
    • http://zhxndl.com/uploadfiles/files/pelarirapatefewutasebol.pdfIn PDF document text
    • https://skinrepublic.vn/webroot/img/files/37721276473.pdfIn PDF document text
    • http://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/16154489842e6c---75889653298.pdfIn PDF document text
    • https://giriconsultancy.com/content_files/files/belon.pdfIn PDF document text
    • http://seoulsquare.com/userfiles/file/minopisikexebi.pdfIn PDF document text
    • http://trendstyleimage.com/uploads/ckfinder/userfiles/files/xiragepujegujuk.pdfIn PDF document text
    • http://thegioichuyendong.info/app/webroot/upload/files/15272772717.pdfIn PDF document text
    • https://tomaszbizon.tomaszbizon.pl/web/uploads/files/satubozajagipuxajajoduv.pdfIn PDF document text
    • https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615404d8728a0---88460484820.pdfIn PDF document text
    • http://rungrawin-itt.com/userfiles/files/zofolene.pdfIn PDF document text
    • http://cftckr.marketsearching.com/upload/files/88674248516.pdfIn PDF document text
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/16158bd9338a75---33639523437.pdfIn PDF document text
    • https://hamasataccessories.com/userfiles/files/dawepomi.pdfIn PDF document text
    • http://nandishoverseas.com/UserFiles/File/26511338051.pdfIn PDF document text
    • http://massimobertoarchitetto.com/userfiles/files/71586580461.pdfIn PDF document text
    • http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/0aaffbfaa64bf6f66afcc0c3b3d03a38/kokipibozefi.pdfIn PDF document text
    • http://shanghaiqingchen.com/upload/files/kezuletelugizubexexuzoda.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012ae4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AE4 10812 bytes
SHA-256: 725f1676b886038ca8867642d530d8ce5fb5ed87a9d4ff42db83770ad5ff0540
font_01_sfnt_off000143d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x143D1 16384 bytes
SHA-256: 6bc4420bbfa61156f096b6f0725168f8601d7500e332933a6f3144c23c09a2fe
font_02_sfnt_off00015a1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15A1B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off0001722d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1722D 25288 bytes
SHA-256: ccf0da6f7bf47a778a0cc72f306400717d56cd636a4149c1f90e98c1906398ad