MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains embedded JavaScript and a significant number of external URIs, many of which are part of a link farm hosted on compromised WordPress sites and disposable domains. These links likely serve as lures to phishing or malware download sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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 https://inwebjor.ru/uplcv?utm_term=toyota+corolla+2017+se+owners+manual
- https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/9f3b073a4b3a843a0b9cc4bf23511cb5/nipekajotezewutujeso.pdf
- http://aksaaydinlatma.com/img/editor/image/file/purafib.pdf
- http://stilna-ya.com/_userfiles/file/tavaxuberefo.pdf
- http://bakefruit.com/uploads//files/202108031719208282.pdf
- http://rszm88.com/upfolder/e/files/20210818204659.pdf
- http://opusincertum.it/userfiles/files/18724317646.pdf
- https://atl-50.com/files/file/mifigoni.pdf
- http://accessprecision.com/userfiles/file/xetikowomiwogiwizokudof.pdf
- http://nissanotogovap.com/uploads/images/files/watitifepejafigizikowaj.pdf
- http://arlington65.org/clients/880802/File/jikizabusodetosape.pdf
- https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/c9f13fc45dfd32e59619f28c1d599ded/5833109560.pdf
- http://teplospectr.ru/images/files/laxidi.pdf
- http://machi-tomo.xyz/js/ckfinder/userfiles/files/34890028368.pdf
- http://agierresrl.it/userfiles/files/tokinimefibiwoje.pdf
- http://groupementpecheduloir.com/ckfinder/userfiles/files/tepupesosapafariwas.pdf
- https://churchosonline.com/wp-content/plugins/super-forms/uploads/php/files/c36b13e2545ae05daf54de68d6e62465/86962804067.pdf
- https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a757f42a3a4---latilubebiwazajev.pdf
- http://stroisvias.ru/userfiles/file/6790747287.pdf
- https://saraelv.no/wp-content/plugins/formcraft/file-upload/server/content/files/1609cb42c09689---kupexabijuvumugototupofi.pdf
- http://wongkungfu.ca/clients/f/f5/f5c316b966f29b3192b3e9e3c5714b3c/File/5260757932.pdf
- https://psystat.net/candyticket/uploads/page_images/files/vofobupuwi.pdf
- http://savoie-outils-coupants.com/ckfinder/userfiles/files/xuzidew.pdf
- https://ijp2.com/contents//files/fodelikefadabuvunitu.pdf
- http://oreade-breche.fr/userfiles/file/tixasasudukaz.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b63f.bin0ca6523804600131f4595b95f99636e5a09d564489c984ea367e0607f24af65c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB63F | 15892 bytes |
font_01_sfnt_off0000deca.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDECA | 16792 bytes |
font_02_sfnt_off0000f6e1.binefa9647e7133a34b65d9f0c65fd24bd138ae01ed1734d02fa3aca0b87baa3f02 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF6E1 | 10908 bytes |
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