PDF malware analysis — malicious · aa8e3c904140013f

MALICIOUS

PDF

82.7 KB Created: 2021-10-07 18:46:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06

MD5: b21dafed4abea858e0ab82068b45b9ca SHA-1: 78c13e6dffddee65e075fb98079102cbfb4a8f40 SHA-256: aa8e3c904140013fc469903b77b34c82c2323941aaaf8ee65631dd49d1c909a3

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 https://kantankacreative.com/wp-content/plugins/super-forms/uploads/php/files/aba8b65573e4314f921f78982d8bf0da/rifuxof.pdf In PDF document text
- http://cuacuonanbinh.com/userfiles/file/6896340868.pdfIn PDF document text
- http://phutungvespaco.com/luutru/files/bixidanozadoxawagajeb.pdfIn PDF document text
- https://hopefor.today/wp-content/plugins/super-forms/uploads/php/files/1e2a75bbceaf63314dabb97fb66fcb6c/kazelunegupemuxak.pdfIn PDF document text
- https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/f12c36adb29fa15ed831466057759cc0/kuduvufuwipos.pdfIn PDF document text
- http://dinobajka.pl/Upload/file/45002394663.pdfIn PDF document text
- https://ehotelgateway.com/bot/ckfinder/uf/files/43544900963.pdfIn PDF document text
- http://myatkinsonfamily.com/userimages/tijamud.pdfIn PDF document text
- http://telektrans.hu/editor_up/93611080990.pdfIn PDF document text
- http://avrig35.ro/uploads/fck_editor/file/15080759167.pdfIn PDF document text
- http://incomsistema.ru/ckfinder/userfiles/files/79808731627.pdfIn PDF document text
- https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615e7808b8f4c---61570680751.pdfIn PDF document text
- http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/759930fa5d26d746befd44d0ec62fbde/71369159856.pdfIn PDF document text
- http://www.feniuniversity.edu.bd/app/webroot/ckfinder/userfiles/files/jonewedorusibabumeva.pdfIn PDF document text
- http://istanbulballoons.com/ckfinder/userfiles/files/59346695461.pdfIn PDF document text
- https://mlspoland.co/files/file/60757138157.pdfIn PDF document text
- http://struttur-arch.it/userfiles/files/55700225471.pdfIn PDF document text
- https://www.medicalart.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1614b37429f388---fiwamesefupamatame.pdfIn PDF document text
- http://woori-tour.kr/FileData/ckfinder/files/20210909_822BC1D6A7F27835.pdfIn PDF document text
- http://extrastyle.ee/ckfinder/userfiles/files/70672079955.pdfIn PDF document text
- https://thic.net/plugin/ce1/ckfinder/userfiles/files/sakilumefufodawepum.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=object+direct+and+indirect+frenchPDF 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_off0000d84d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD84D	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000f05f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF05F	20136 bytes
SHA-256: `8d5e53a6b8d9cb40dc6ac8b1190a3eb11fb30332d4a893053f2d41a558359320`
`font_02_sfnt_off0001254f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1254F	10532 bytes
SHA-256: `7479447d045d2fe7881078d7f061fe82a3dd14033c2e756e4f4ef4c95cf9ba78`

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