MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external links, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm for SEO manipulation or phishing. The ClamAV detection and ML classifier strongly suggest malicious intent, likely to redirect users to malicious sites or download further payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9990
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF 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.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall 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.
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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe 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.
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Embedded URL info EMBEDDED_URLOne 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://yuhuimachinery.com/d/files/kidosoginexinewovudiwakuv.pdf In PDF document text
- http://2478.ru/admin/ckfinder/userfiles/files/vodubatikenizafibuwaka.pdfIn PDF document text
- http://zs-g.jp/app/webroot/js/ckfinder/userfiles/files/45411926588.pdfIn PDF document text
- http://whitedwarf.ru/public/images/ckfinder/files/14583097134.pdfIn PDF document text
- http://mgbig.com/upload_fck/file/2021-10-6/20211006075843854875.pdfIn PDF document text
- https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/161435855e9913---75790420103.pdfIn PDF document text
- http://www.samuitns.com/image/upload/File/gemovajipiwotevubima.pdfIn PDF document text
- http://abwjefferson.com/uploads/files/79844953393.pdfIn PDF document text
- http://amsaneeraus.fi/userfiles/files/zizeviveropilufob.pdfIn PDF document text
- https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/05ad307073a75d731ec4ef8b2277cb47/vavokudoxukibal.pdfIn PDF document text
- http://namadagaskare.ru/ckfinder/userfiles/files/37353739057.pdfIn PDF document text
- https://www.tulsarad.com/my_content/js/ckfinder/userfiles/files/totakolebolufepo.pdfIn PDF document text
- http://steakclubhn.com/campannas/file/97454510894.pdfIn PDF document text
- http://thai-apsproducts.com/file_media/file_image/file/87327212506.pdfIn PDF document text
- http://fisioterapiasuzzara.it/userfiles/files/kupetaliporox.pdfIn PDF document text
- http://www.lukoilmarine.com/ckfinder/userfiles/files/28734456619.pdfIn PDF document text
- https://cabsfromheathrow.com/userfiles/file/refuruminojamiwatogipigut.pdfIn PDF document text
- http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/16156a8d4b34ce---wewemowak.pdfIn PDF document text
- http://xn--nellieskche-0hb.de/userfiles/file/laselinatedodijavazaki.pdfIn PDF document text
- https://feedproxy.google.com/~r/Gsjc/~3/TxADE9PCSUw/uplcv?utm_term=can+i+use+facebook+logo+on+my+websitePDF 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_off0000f478.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF478 | 11144 bytes |
SHA-256: a9b3105135bcefb5043f3e070fbc63a5971f75197aea576bc13c2d6be4667bb2 |
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font_01_sfnt_off00010ea6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10EA6 | 19272 bytes |
SHA-256: e89ea4851981d8f11b010b4b347acb04c3130cd9226ce057b6f2cfb92981b632 |
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font_02_sfnt_off00014021.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14021 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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