MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by ClamAV as a phishing trojan and ML classifiers indicated a high probability of maliciousness. Heuristics identified it as a link farm pointing to compromised WordPress uploads and disposable hosting, suggesting an attempt to redirect users to malicious sites. The presence of numerous URLs, many associated with SEO-poisoned content or compromised CMS uploads, reinforces the phishing and redirection attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9913
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://crysiq.ru/uplcv?utm_term=how+to+convert+from+heic+to+pdf PDF link annotation
- http://lammensfilip.be/uploads/files/20059789873.pdfIn PDF document text
- https://businesslife.com/content/files/92246802197.pdfIn PDF document text
- https://flour.co.uk/ckfinder/userfiles/files/tumawuvisirasizexoti.pdfIn PDF document text
- http://rpelektromont.cz/admin/obrazky/file/79411861365.pdfIn PDF document text
- http://deforma.it/userfiles/files/maxijonogokafinuxuk.pdfIn PDF document text
- http://espacioschillout.es/images/admin/file/wesirumakezowaguvati.pdfIn PDF document text
- http://travelsi.ru/ckfinder/userfiles/files/vuximomowujapexujoma.pdfIn PDF document text
- http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16153ac2ccc361---35632986744.pdfIn PDF document text
- https://hotelgaric.com/upload/datoteke/28014895538.pdfIn PDF document text
- http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/bffbdce8f17a3064a2515a5ecb4cb6ee/65855840510.pdfIn PDF document text
- http://gopherandsquirrelcontrol.com/admin/images/file/relakividiga.pdfIn PDF document text
- http://www.de.ruben.pl/ckfinder/userfiles/files/sulafelazej.pdfIn PDF document text
- https://willes-gb.com/uploads/files/202109080610386456.pdfIn PDF document text
- http://gonzagafood.com/userfiles/files/61441999181.pdfIn PDF document text
- https://xn--dokumaanahtarlk-llc.net/userfiles/file/tikovatexasuji.pdfIn PDF document text
- http://darstin.com/userfiles/files/jedufipuviropo.pdfIn PDF document text
- http://www.como-grup.ro/fisiere/file/safovosuvukupezasur.pdfIn PDF document text
- https://adverto.ee/userfiles/file/66058389234.pdfIn PDF document text
- http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1615073e4df61d---7855222063.pdfIn PDF document text
- https://www.wroclawmodelshow.pl/ckfinder/userfiles/files/73139622543.pdfIn PDF document text
- https://krygina40.ru/UserFiles/File/16509548758.pdfIn PDF document text
- https://ceccardolj.ro/userfiles/file/kizulikafaf.pdfIn PDF document text
- http://hzxgdz.com/images/upload/File/66524401573.pdfIn PDF document text
- https://minhgianggroup.vn/upload/files/sazogimok.pdfIn PDF document text
- https://t2sc.me/userfiles/nasibetanuj.pdfIn PDF document text
- http://busangh.com/attfile/fckimg/file///2021100733423_726250651.pdfIn 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://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_off0000f661.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF661 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00010e73.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E73 | 21140 bytes |
SHA-256: 0d46b58be3ca794817b22cf6ad7fc53082037c83d83b62ba6fda928740b0214c |
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font_02_sfnt_off00014365.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14365 | 10652 bytes |
SHA-256: bba4475a2ac74c9acfefa46d863599aba2f2104f8773759d3995ee23e5df2b09 |
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