Malicious PDF — malware analysis report

Static analysis result for SHA-256 782f9f598100aaf6…

MALICIOUS

PDF

80.2 KB Created: 2021-10-21 17:59:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-16
MD5: b9e258d3babdee38210702ebb975a30b SHA-1: d682aba02cd95f5a78f4120e819494efd1b85305 SHA-256: 782f9f598100aaf6f8e151a1b104d48a96bb799d2ceb1c9b716f9af003c0ef9d
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://irlanc.ru/uplcv?utm_term=download+obs+64+bit+for+windows+10 PDF link annotation
    • https://n-zvuk.ru/upload/file/weterusodafuxumegowugel.pdfIn PDF document text
    • http://sobinco.cz/ckfinder/userfiles/files/29786445846.pdfIn PDF document text
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/1613d8714edee4---49199326891.pdfIn PDF document text
    • https://www.breastcancerfoundation.in/wp-content/plugins/super-forms/uploads/php/files/f5829d483471fbc2a16945ff648eb9d0/57267466780.pdfIn PDF document text
    • http://cdkuysuujk.handysociality.com/upload/files/24714386863.pdfIn PDF document text
    • http://sbairs.com/datas/files/bavaben.pdfIn PDF document text
    • http://adas-muko.pl/photo/file/gimep.pdfIn PDF document text
    • http://copingconversations.com/userfiles/file/81968620985.pdfIn PDF document text
    • http://519pf.com/userfiles/files/feveg.pdfIn PDF document text
    • http://1000projects.ru/upload_picture/file/jagusetemutegom.pdfIn PDF document text
    • https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141684d43f7c---63625147786.pdfIn PDF document text
    • https://ku4ysk-9lgp4y.com/contents/files/suzijadonerapijifiruvi.pdfIn PDF document text
    • https://letajicikoberce.cz/userfiles/file/11764259934.pdfIn PDF document text
    • http://goldenagegroup.vip/userfiles/file/31618550184.pdfIn PDF document text
    • http://westernmaki.com/uploads/files/wadud.pdfIn PDF document text
    • https://fultoys.com/userfiles/76990784542.pdfIn PDF document text
    • http://avtokit116.ru/!upload/files/nijime.pdfIn PDF document text
    • http://neogmbh.de/www/sites/default/files/userfiles/file/94098575003.pdfIn PDF document text
    • http://sangjeom.com/userfiles/file///89280019583.pdfIn PDF document text
    • http://learningkey.org/userfiles/77216319640.pdfIn PDF document text
    • http://www.vljainandco.com/userfiles/files/kipomafipefetogegeluzozab.pdfIn PDF document text
    • https://prestinieurope.ch/userfiles/files/taxinusovobixamu.pdfIn PDF document text
    • https://lamthong-marchph.com/piceditor/file/73221908684.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_off0000d3ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3AD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ebbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBBF 17772 bytes
SHA-256: 52c23ee221b24d9562772dd258c28ab551666e1f653db0ff15e214c5af546729
font_02_sfnt_off00011a04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A04 10860 bytes
SHA-256: 36e73a28d47a7bb7d54af46e716b69664369ffe06153c5753aa0da3d4ac5c7e4

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