PDF malware analysis — malicious · 26dc9be47f0c5ccd

MALICIOUS

PDF

103.0 KB Created: 2021-06-29 00:00:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05

MD5: d96982e52377f7b334d435e8f5dda44f SHA-1: 098c6d35463a3fe943a3a2f566b84751c4d3f885 SHA-256: 26dc9be47f0c5ccd201ee1cad5475a24f15fe42380c624e66a1d66bc319eeb8a

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a link farm with numerous URLs pointing to compromised WordPress sites, suggesting an attempt to redirect users to malicious content. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it's designed to exploit users through these links, potentially leading to phishing or malware downloads.

Machine Learning

Nyx PDF Classifier malicious score 0.9887

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://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a2703c364ed---36016182004.pdf In PDF document text
- https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/kih3rn4beegec84frls16lnuoa/xigonopusonatevime.pdfIn PDF document text
- https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/i7up9r3fg1irvolc6rpknab62q/82204669252.pdfIn PDF document text
- http://mackielaw.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/movupavagewokelusumel.pdfIn PDF document text
- http://businessplan-capalpha.eu/mbp/upload/images/images/upload/ckfinder/43010205951.pdfIn PDF document text
- http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608318cf1262d---piruwuvu.pdfIn PDF document text
- https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160b7f71506ca8---40897000486.pdfIn PDF document text
- http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/16078ac3372ccf---5738142795.pdfIn PDF document text
- https://majorsagilekvaros.hu/uploads/file/57227094072.pdfIn PDF document text
- http://myjobcareer.net/userfiles/file/2021052216330273499.pdfIn PDF document text
- https://propbrains.com/wp-content/plugins/super-forms/uploads/php/files/jv6m1bi50dj1o8o4ujuvffqb83/solixeronulavetubow.pdfIn PDF document text
- https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4658c4230c---fobufebo.pdfIn PDF document text
- https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1c16498df1---nuromofefisukasora.pdfIn PDF document text
- https://aartipalette.com/userfiles/file/22139114392.pdfIn PDF document text
- http://brenno-tojestto.pl/userfiles/file/10540309067.pdfIn PDF document text
- http://broadviewlibrary.org/uploaded_bvlib/file/katuw.pdfIn PDF document text
- http://simonide.org/userfiles/file/vamevibediguj.pdfIn PDF document text
- http://caramelitos.sk/files/3970778202.pdfIn PDF document text
- https://securityguardsupply.org/php/uploads/file/xumigu.pdfIn PDF document text
- http://www.anclupnapoli.it/userfiles/file/jokisarawafavofov.pdfIn PDF document text
- https://empylean.com/wp-content/plugins/super-forms/uploads/php/files/of8pljf7l1mss7700ifsmh8aba/96481967728.pdfIn PDF document text
- https://apoc.com.au/wp-content/plugins/super-forms/uploads/php/files/af8341a2cc27ab7c0934e9b81695b133/4015050839.pdfIn PDF document text
- https://empylean.com/wp-content/plugins/super-forms/uploads/php/files/hlbj46nmai79inas5v1fda4pta/sofenudunef.pdfIn PDF document text
- https://tourpon.kr/FileData/ckfinder/files/20210614_2F81C0788499F01E.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=muscle+growth+interactive+storyPDF 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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00010bae.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10BAE	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off000123c0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x123C0	22760 bytes
SHA-256: `bab93345cfb8c3395e70a72e519c12d723b8f229775769a9bdf1ec919d9ae5c9`
`font_02_sfnt_off00015df1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x15DF1	16120 bytes
SHA-256: `19fb3e0837d6f9ee728c5331d7bb33e1bff3d595bd4ca4a0aae7833d7d421d60`
`font_03_sfnt_off0001734c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1734C	10868 bytes
SHA-256: `bbc2139eddab078d5e100d625d567d41a1843f7dc6db54984d08737da8abc504`

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