Malicious PDF — malware analysis report

Static analysis result for SHA-256 191dbd9bf5fde71a…

MALICIOUS

PDF

79.3 KB Created: 2021-09-05 01:08:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: 99fa280c96793d581439fa105e08076c SHA-1: e180b685d2f99c56b670b4a979484df0dadc11c4 SHA-256: 191dbd9bf5fde71a28a61b6187e4eb73b64bc755068975e633fe59cd90641440
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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://ketchas.ru/uplcv?utm_term=vedic+astrology+pdf+books PDF link annotation
    • https://iguanapools.com.au/wp-content/plugins/super-forms/uploads/php/files/cio9qgnt7acc1jte94qkv02tvo/wajip.pdfIn PDF document text
    • http://www.tecnotrefg.it/wp-content/plugins/formcraft/file-upload/server/content/files/160f04c54748fd---80942189272.pdfIn PDF document text
    • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/160bd01b40b8fa---bogajajererivi.pdfIn PDF document text
    • http://tindangnhadat.vn/upload/files/79478795690.pdfIn PDF document text
    • https://noventa.cz/media/files/file/gajori.pdfIn PDF document text
    • http://ikhmongol.mn/ckfinder/userfiles/files/56132555603.pdfIn PDF document text
    • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acc524e8b84---powazalilabim.pdfIn PDF document text
    • http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610bd3646fab1---90712981601.pdfIn PDF document text
    • https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081ff154fddd---zevukut.pdfIn PDF document text
    • https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/5b1fe46e9bfded1722e1ba9d73d638cd/kosorijifizuka.pdfIn PDF document text
    • http://nedirajtebosnu.net/userfiles/file/megoxegipi.pdfIn PDF document text
    • http://serdceprirody.ru/userfiles/file/fijinafufebelapalisoduni.pdfIn PDF document text
    • http://yokohama-model.com/userfiles/files/mivomutaverobola.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16076f03831683---22257065344.pdfIn PDF document text
    • http://ahdjcm.com/upload/files/14919321676.pdfIn PDF document text
    • https://actor-conseil.com/files/file/zubulagoka.pdfIn PDF document text
    • http://spamsmsgiare.com/media/ftp/file/rudiwutenoxugejimonurugej.pdfIn PDF document text
    • https://sanidom.pl/img/file/30458114032.pdfIn PDF document text
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/16088994deae5c---20390117478.pdfIn PDF document text
    • https://fermuar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a521ac81d03---weliwusedivi.pdfIn PDF document text
    • https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/248ce2a163bc5a2f1cd06dc732b3b27f/23007416631.pdfIn PDF document text
    • http://easthighclassof1962.com/clients/2/24/240b89ecbeded73b1ae3fdc7544f4fd7/File/79209442507.pdfIn PDF document text
    • http://azizolace.cz/images/file/98663866204.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_off0000d04a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD04A 11004 bytes
SHA-256: 72802d57a51b2141dcb3f7183c81b87c3f070ef6a1190b1a36f777e1ddf191f1
font_01_sfnt_off0000e998.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE998 17640 bytes
SHA-256: c9065f7eae5cd52484239f540aae3583030c1449aab572b48c4f2cde23af6dde
font_02_sfnt_off00011777.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11777 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1