MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF document is classified as malicious, likely a phishing or malware delivery attempt. It employs a link farm strategy, hosting malicious files on compromised WordPress sites and other disposable domains, disguised as a free grammar guide. The presence of multiple external URIs and the ML classifier's high confidence score indicate a deliberate attempt to deceive users into downloading further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 6
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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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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://wastran.ru/uplcv?utm_term=english+for+everyone+english+grammar+guide+practice+book+pdf+free+download PDF link annotation
- http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/16075441016757---lafiw.pdfIn PDF document text
- http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/g08grivodjlnea005fdvs6scf4/53526036500.pdfIn PDF document text
- https://vaytieudungtragop.com.vn/wp-content/plugins/super-forms/uploads/php/files/3bhlcj0j3gdfdkkd04jo0c9vh1/bipapagagu.pdfIn PDF document text
- https://wilsonbarrera.com/inicio/wp-content/plugins/formcraft/file-upload/server/content/files/1607555bca6942---78415417173.pdfIn PDF document text
- http://onlineticketreview.com/images/file/rumupepivalumi.pdfIn PDF document text
- https://atlastoursntravels.com/userfiles/file/27289984034.pdfIn PDF document text
- http://www.uvhk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8514d7d299---wugunudokutik.pdfIn PDF document text
- http://hanhthien.net/uploads/file/jowejuka.pdfIn PDF document text
- https://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/887e5ea5880150c5d1ffd903f25b7f74/28178465862.pdfIn PDF document text
- https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/vmh291juph4i55md28nr2he0ml/wofabip.pdfIn PDF document text
- http://salon-urody-bellis.pl/images/file/rakotunabazufevo.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4625818b53---fojofi.pdfIn PDF document text
- https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606d294b4e156---nusuzulipikudegapamokenib.pdfIn PDF document text
- http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad8bbb1a602---fomaxu.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- 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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e8af.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE8AF | 5984 bytes |
SHA-256: c7976ae7786906149fa8d93d196ef7974149f1f9656f66e33adf52eee3e38693 |
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font_01_sfnt_off0000fd01.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD01 | 10344 bytes |
SHA-256: 3de9dae27ae1240155fc0495a4d6da52b60dcfd8df25225ff0c7ea13b6303296 |
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