PDF malware analysis — malicious · d3e0837387b24d52

MALICIOUS

PDF

87.2 KB Created: 2021-07-26 06:20:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-20

MD5: 1142a3347bb687b1fb8ad7ef0d1aae1f SHA-1: 17b2ea984c690a39c41e6048ae3c6b72acd2f254 SHA-256: d3e0837387b24d527aaad3fdf75e0583d39a82a9600522cae9658bfc2a1fc1fc

156 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9896

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 http://ecbpolska.pl/wp-content/plugins/super-forms/uploads/php/files/fb334b328c735ea309ca7bfd00ddc9b1/2401135916.pdf In PDF document text
- https://propbrains.com/wp-content/plugins/super-forms/uploads/php/files/cgmf40jkq12t9r1bf5pj0o9f12/bopemafozivelojewexe.pdfIn PDF document text
- https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160735170a5591---61135997132.pdfIn PDF document text
- http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/de3pid7i8io4vmmu1gp92ml0m5/61071572870.pdfIn PDF document text
- http://szsahsh.com/uploads/files/5876579020.pdfIn PDF document text
- http://xn--szabowski-tub.pl/userfiles/file/52840032952.pdfIn PDF document text
- http://ylgems.com/file_media/file_image/file/gezupijapero.pdfIn PDF document text
- https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160969c056e1c6---72072274481.pdfIn PDF document text
- http://bmhs71.com/clients/c/c9/c97ff408e01126d63256cf68004d6641/File/jubevulufoganemufimib.pdfIn PDF document text
- http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/ebf9272c3117beed6e35508725677469/timifagawa.pdfIn PDF document text
- https://vibanghanoi.com/uploads/files/popedusezapukuraxixa.pdfIn PDF document text
- http://elyriahigh1974.org/clients/0/05/052ab20d644b737728595af1a47b4450/File/12923688246.pdfIn PDF document text
- http://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/16083bee7e454d---24388729881.pdfIn PDF document text
- https://heykidsletscook.info/wp-content/plugins/super-forms/uploads/php/files/59d5682f1cb199317464a443f85e804b/nizudukalotopasewavi.pdfIn PDF document text
- https://oiweld.com/wp-content/plugins/super-forms/uploads/php/files/2e19e264e07e48dc36cbe8ffc35cc9e8/xamak.pdfIn PDF document text
- https://betenagro.com/sites/default/files/file/64780352112.pdfIn PDF document text
- https://szabobuszrendeles.hu/files/files/jisogofegafovasibobowobu.pdfIn PDF document text
- http://kemmurad.com/webroot/img/files/12721292888.pdfIn PDF document text
- http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/160dd8fa2670e9---vurini.pdfIn PDF document text
- https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607968ff256d1---13771973803.pdfIn PDF document text
- https://www.displaysdirectaustralia.com.au/application/third_party/ckfinder/userfiles/files/lujaveramizurugoparapa.pdfIn PDF document text
- http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c154aa09bd---65221702643.pdfIn PDF document text
- http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/4ga2h64se01osfqb2cc14k7340/jikilekege.pdfIn PDF document text
- http://bociany.sk/media/file/tunipofoxagibabosesawil.pdfIn PDF document text
- http://holidayinntorino.com/userfiles/files/1430705189.pdfIn PDF document text
- https://www.lorenzofranzone.it/wp-content/plugins/super-forms/uploads/php/files/552f9c6fdddda35742f80eba635c3395/tapabijufugamem.pdfIn PDF document text
- http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/ab36ebde1384b03052442ef7889c86c2/zaladovumuwabudamelulozi.pdfIn PDF document text
- http://valifyrepapillon.com/clients/6/68/68e1c6a84db99a04c21676ff826d6e37/File/mofamevorebiluxaru.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=cod+ww2+alle+waffenPDF link annotation
- 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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f083.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF083	18284 bytes
SHA-256: `d8fb720e3564557d8805cca6c2892e112273182c9c421bdf5789f1c6687ab67f`
`font_01_sfnt_off00011f70.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11F70	10128 bytes
SHA-256: `a0697ddd1230d863c070f3839ab2ddc4e2c7b05b98a8fbc253cd4b15ac96d6fe`
`font_02_sfnt_off00013653.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13653	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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