MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier indicating a high probability of maliciousness. It contains numerous external URLs, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics indicates a tactic to obscure the true destination and leverage potentially compromised infrastructure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
Heuristics 6
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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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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://irlanc.ru/uplcv?utm_term=can+you+get+sharpie+out+of+a+shirt
- http://3q1p.com/upload/file/210622094250892627yrszz7sfbyg7.pdf
- http://sl1971.com/clients/5/51/517263f0417f9379c67e6eba0e0bdfe8/File/nidajotikub.pdf
- http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608289488dd39---25741578557.pdf
- http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac742db707a---garaxebidemamifi.pdf
- https://mrmobilewebsite.agency/wp-content/plugins/super-forms/uploads/php/files/2d9ea654fd8124cb15d5ad5a5730ae6a/moxej.pdf
- http://akkoryazilim.com/userfiles/file/zuxakawomulusolujowujudu.pdf
- https://seataclighting.com/wp-content/plugins/super-forms/uploads/php/files/bce6ee9ca3e2103ed9ef1c123f512430/fesoruzeliraluxoz.pdf
- https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/8603a6eb8bb77fa743d2a751d3bc5697/2262594358.pdf
- https://makemycake.gr/wp-content/plugins/super-forms/uploads/php/files/g87qv6gff27nnrvnnbjkmh5ivu/wulurufo.pdf
- http://refta-bg.com/userfiles/file/32421420067.pdf
- http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/16080c86d97252---pamalojujukukujo.pdf
- http://enjoybowlramenandpoke.com/uploads/files/31296411617.pdf
- http://papianiarch.it/userfiles/files/87474730384.pdf
- https://chamsocmuihong.com/wp-content/plugins/super-forms/uploads/php/files/hnj4bjlta00abjta6mudg4ki7c/faxarimudofapumuto.pdf
- https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/5bf26ce9cea9405a3f231108e283e0b1/8415871668.pdf
- https://www.nordatec.com/wp-content/plugins/super-forms/uploads/php/files/29rrp3gs4judem5nn9bgocepr8/28709845931.pdf
- http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a539f3283d8---52204803637.pdf
- http://dnepropress.net/files/file/wekuf.pdf
- http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16089850d68376---36792114894.pdf
- https://ludifrance.fr/userfiles/file/ziviligopa.pdf
- https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608244adc7b6a---42724874731.pdf
- https://www.stamfordtaxis.com/wp-content/plugins/super-forms/uploads/php/files/5uid70ffh5kiajgaubt4b0i6bs/5233630323.pdf
- http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/a91ca5c9aa202b2a494dce6489f33819/loxotesizew.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_off0000e27b.bin8a3facb971bda11cc7044f24e4088dee6ac57a44170b9da74e1cd0f6cd56d98c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE27B | 10836 bytes |
font_01_sfnt_off0000fb83.bind48c918befe4fab251b3cab970be4ee0ff7d659a30b0ab998a8a90ee9d6da6dc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB83 | 17568 bytes |
font_02_sfnt_off000129a9.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x129A9 | 16792 bytes |
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