Malicious PDF — malware analysis report

Static analysis result for SHA-256 941bcb02c36269fb…

MALICIOUS

PDF

79.5 KB Created: 2021-09-21 10:29:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 784bf34fc50a32d8a0e44ca3e852fc35 SHA-1: 2819a6cddc2bc57bd8bdda2efb5d5b5405e2743b SHA-256: 941bcb02c36269fbcd8d9ffa02f109db2b1e9be02224daaea7cd5ca1de3e2183
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://cructi.ru/uplcv?utm_term=link2sd+could+not+obtain+root+access PDF link annotation
    • https://stillwaiting.org/userfiles/file/duxanineziz.pdfIn PDF document text
    • https://kultmotor.hu/images/files/zezave.pdfIn PDF document text
    • https://dukra.sk/editor_uploads/files/93130268563.pdfIn PDF document text
    • http://tatishev.ru/admin/ckfinder/userfiles/files/93000894658.pdfIn PDF document text
    • http://chonburi33.com/userfiles/file/lijaninuwurukamuvafabatig.pdfIn PDF document text
    • http://bestbuyfromindia.com/userfiles/file/fimiwebojaj.pdfIn PDF document text
    • http://htk2.altrodesign.eu/ckfinder/userfiles/files/56629732217.pdfIn PDF document text
    • https://www.sherpachristain.org.np/ckfinder/userfiles/files/14224330872.pdfIn PDF document text
    • https://www.popcaffe.it/wp-content/plugins/super-forms/uploads/php/files/5637e6c44880259f4a78d9aa14667f8a/biregadorutoxezagomugobup.pdfIn PDF document text
    • https://omprintandpack.com/userfiles/file/66279234617.pdfIn PDF document text
    • https://dunakanyarfesto.hu/ckfinder/userfiles/files/32722550902.pdfIn PDF document text
    • http://tnshoppingbag.com/upfiles/file/94481970282.pdfIn PDF document text
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1612f5c753ca42---28353102759.pdfIn PDF document text
    • https://1snrpaulista.com.br/ckfinder/userfiles/files/tujufomi.pdfIn PDF document text
    • http://sz-nuoyi.com/Upload/file/2021091902231828460.pdfIn PDF document text
    • https://polenhosting.com/calisma2/files/uploads/49190055533.pdfIn PDF document text
    • http://queensparkview.com/image/upload/File/85544452911.pdfIn PDF document text
    • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140f0f520f0e---kujitutaso.pdfIn PDF document text
    • https://gruntbudowa.pl/files/file/zukuki.pdfIn PDF document text
    • http://trungnguyenjsc.vn/uploads/image/files/11450013242.pdfIn PDF document text
    • http://geriatriccarenewjersey.com/userfiles/files/wifizejiguxepuz.pdfIn PDF document text
    • http://isotope3.pm-ural.com/uploads/files/fijemuxotive.pdfIn PDF document text
    • https://alshamiltrading.com/alshamilfiles/file/72348400740.pdfIn PDF document text
    • http://synergytaekwondo.com/click2buy_newp/userfiles/file/fodowatewabem.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_off0000cf2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF2A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e741.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE741 10772 bytes
SHA-256: 3d617a9210bc25a60cedff9113c67413a0ca470461e0e93e63eee002d927da9b
font_02_sfnt_off00010035.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10035 18204 bytes
SHA-256: 553d810e4d958ccbec3d66883cee317b5de6c79b2b2d2137e7476686a35b5e57