PDF malware analysis — malicious · 2b66fe1e1b6d4dbb

MALICIOUS

PDF

89.4 KB Created: 2021-10-27 15:09:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-17

MD5: 8ccdb4f9226e1883a858230fe007e993 SHA-1: 592cc301351da42e940c85231523d125db74da3c SHA-256: 2b66fe1e1b6d4dbb4e31a3363022359b946d5c221b3b64cb3b4b4bfe48551e64

156 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9956

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://reylab.com/userfiles/file/80037744852.pdf In PDF document text
- http://xn----ftbkdcamitb5h.xn--p1acf/files/fck/file/mojotofokaw.pdfIn PDF document text
- http://jeanchapleau.com/userfiles/file/pinukenoropez.pdfIn PDF document text
- https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/16141ee272883a---febonekop.pdfIn PDF document text
- https://astoraccessories.com/uploads/ckfinder/files/mudaj.pdfIn PDF document text
- https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/1613548cb0adfa---68154979644.pdfIn PDF document text
- http://langfordfinancialservices.com/userfiles/files/mawanugozusejez.pdfIn PDF document text
- https://attack.lt/images/files/rudutekulaxoxavexuraxil.pdfIn PDF document text
- http://tlumacz-lipno.pl/pdrzewiecki/files/89813712913.pdfIn PDF document text
- http://cupta.org/userfiles/files/20210928131339.pdfIn PDF document text
- https://slotsonline.ro/app/webroot/files/userfiles/files/vafaforonevawenofewuxifo.pdfIn PDF document text
- http://wbdo.pl/userfiles/file/perakuxapiwujabuwo.pdfIn PDF document text
- http://boxshop.mn/userfiles/files/91200472647.pdfIn PDF document text
- http://leadershipcareer.kr/fckeditor/_upload/file/jurigutovaxapuvadabu.pdfIn PDF document text
- https://pakistanchristiancongress.pakistanchristianpost.com/userfiles/file/dagapekisexekekoxujob.pdfIn PDF document text
- http://everest-c.ru/ckfinder/userfiles/files/29131138866.pdfIn PDF document text
- https://candica.pl/ckfinder/userfiles/files/supemuzuzovigebob.pdfIn PDF document text
- https://agrimal.pl/userfiles/file/duborafisutoduxaf.pdfIn PDF document text
- https://suruburi.net/mm/file/vekufewulagus.pdfIn PDF document text
- http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b2549759db---64071150409.pdfIn PDF document text
- http://hcpcsz.com/upfolder/e/files/20211008184512.pdfIn PDF document text
- http://www.srijonihealinghome.com/fckimages/file/44393011063.pdfIn PDF document text
- https://feedproxy.google.com/~r/Gsjc/~3/896FEnmJZlk/uplcv?utm_term=bible+stories+for+youth+pdfPDF 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_off0000f890.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF890	18328 bytes
SHA-256: `83041a0ec724714c5d5b1a57c16bc1b2b759f3313b53289b1ed29f8756b06863`
`font_01_sfnt_off00012801.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12801	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00014018.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14018	10736 bytes
SHA-256: `18f4f69c317a80d85c7f5d8c65e3c1ee68accd1f63d051d89e7a9ef78f38383f`

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