Malicious PDF — malware analysis report

Static analysis result for SHA-256 191e8cdfcc525700…

MALICIOUS

PDF

83.8 KB Created: 2021-10-10 09:20:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: 5ce872ba5f9137ead618379fae068828 SHA-1: bbfe9353527f261a9056d7ea58d838e52e24f514 SHA-256: 191e8cdfcc525700a7dde719b95222e9a2a0a1eaca93e9d8be1fd8b738b59a10
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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=3+important+facts PDF link annotation
    • https://adikketiga.com/contents/files/numenolu.pdfIn PDF document text
    • http://thaide.org/userfiles/file/23889873210.pdfIn PDF document text
    • https://1am130r6h1n1-k11a7.com/contents/files/xotirusekul.pdfIn PDF document text
    • http://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615e8a2df171c---siloti.pdfIn PDF document text
    • http://royalrep.com/userfiles/files/sajagutojafalevurux.pdfIn PDF document text
    • http://songpinhao.com/userfiles/files/67777289605.pdfIn PDF document text
    • https://studio45.live/wp-content/plugins/super-forms/uploads/php/files/1mf6r15lgvi1n2dtstmqprjf4i/bigezege.pdfIn PDF document text
    • http://noxsun.com/jingkelun/userfiles/files/20211008182426.pdfIn PDF document text
    • https://happy-playground.gr/uploads/_uploads/files/xoruwazatediwirelupe.pdfIn PDF document text
    • https://davidfauquemberg.com/home/fauquemb/david/bbdg_site/userfiles/file/walusatezokadij.pdfIn PDF document text
    • http://ferrocom-spb.ru/userfiles/files/77587188938.pdfIn PDF document text
    • http://helder-effect.nl/userfiles/file/xigijatemotixuf.pdfIn PDF document text
    • http://air-con.ru/upload/files/3632063047.pdfIn PDF document text
    • https://pelletier-tp.fr/ckfinder/userfiles/files/53076655090.pdfIn PDF document text
    • http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16151bd740738b---11420732058.pdfIn PDF document text
    • https://pakianco.ir/data/image/uploads/news/files/23295317141.pdfIn PDF document text
    • http://www.altrus.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1613dceda42a68---fegafasovexivove.pdfIn PDF document text
    • http://okuninka-biale.pl/userfiles/file/24142996227.pdfIn PDF document text
    • https://nwdglobal.com/ckfinder/userfiles/files/xemageliminuki.pdfIn PDF document text
    • https://latgalesamatnieki.lv/files/file/79524752592.pdfIn PDF document text
    • http://ed-union05.ru/files/file/87531789292.pdfIn PDF document text
    • https://empresa-venta.hr/files/nazufuruzinikuwudalizike.pdfIn PDF document text
    • http://chinazzjx.com/d/files/58331600380.pdfIn PDF document text
    • http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16140e32f85883---fawotuzuwumupi.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_off0000dfe8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFE8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f7ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7FF 10540 bytes
SHA-256: ff21201a59250bf8b0906c4a6fbdf4e83a2225eaa1db866b7a4cd4a2d4e44c32
font_02_sfnt_off00010ff1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FF1 19564 bytes
SHA-256: a757adc7b459769dcbc50c4d25cc6582d390d777bdb1edfe448806a03f79eaf5