PDF malware analysis — malicious · cd7840ea43d91f05

MALICIOUS

PDF

82.7 KB Created: 2021-10-04 11:55:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19

MD5: 2b4c1d5ecd7951d4fc5d1fae0f55c9a6 SHA-1: b3a024754024f90c6019a95a9aadbe1a6a3ecb7b SHA-256: cd7840ea43d91f05912d47460b91ab2fe702192c4617a7d8d97f283ea5442a04

156 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9985

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://romovi.net/sgi_userfiles/userfiles/files/77468328864.pdf In PDF document text
- https://spheresignal.com/app/webroot/userfiles/files/61313597981.pdfIn PDF document text
- http://energosol.pl/images_cms/file/pudixi.pdfIn PDF document text
- https://rebates.forex/wp-content/plugins/super-forms/uploads/php/files/hae00offsa6tn58ojkknij5gl1/41423431490.pdfIn PDF document text
- http://madiran-cruduparadis.fr/ckfinder/userfiles/files/fetivoxufe.pdfIn PDF document text
- http://wxhsbl.com/ckfinder/userfiles/files/20211003_014858.pdfIn PDF document text
- https://bibliotheque-des-arts.com/ckfinder/userfiles/files/zilexuzebab.pdfIn PDF document text
- https://asp2.aiwangyun.com/ckfinder/userfiles/files/gejubonegekimuzo.pdfIn PDF document text
- http://ryukatsu.com/userData/board/file/woweruz.pdfIn PDF document text
- http://locnuocvietmy.com/Images_upload/files/melukolozitin.pdfIn PDF document text
- http://mariamozharova.ru/uploads/files/vuwomubunowozotewosaleve.pdfIn PDF document text
- https://bartonsteel.com/tony/barton/ckfinder/userfiles/files/fugipa.pdfIn PDF document text
- https://deconkhoemanh.com/wp-content/plugins/super-forms/uploads/php/files/11hkdhcp2pvbi6r3i1tjohbsg2/buxikelaxazesuzuvi.pdfIn PDF document text
- https://pensiuneavalentina.ro/app/webroot/file/wudow.pdfIn PDF document text
- http://leinerpakgelatine.com/survey/userfiles/files/4196434631.pdfIn PDF document text
- http://akcjonariusz.com/UserFiles/file/wuvagatu.pdfIn PDF document text
- http://glassick.com/userfiles/file/ruvefodupunupufaxomup.pdfIn PDF document text
- http://chieucoingason.vn/files/govematajizusaromajixeg.pdfIn PDF document text
- http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/4b6g5hsqevqacel425lcrcq393/60982436704.pdfIn PDF document text
- https://superlitefan.com/uploads/files/tudadexajilazanomo.pdfIn PDF document text
- https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/219fa03c0157a34a7fc1d0deb97c47cf/21662831034.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=in+cold+blood+chapter+2+summaryPDF 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_off0000db4d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDB4D	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000f35f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF35F	18560 bytes
SHA-256: `21d2fee2c426f82e0a40ba76c01b75216f882ea8bc894723a66bd84a6ccc66e7`
`font_02_sfnt_off0001232f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1232F	11112 bytes
SHA-256: `71382efed2d8c2581bce61a0bc13e75a238f7967b13b3574f4ea948506df5fd9`

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