MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample was detected by ClamAV as a Pdf.Phishing.Trojan and flagged by an ML classifier, indicating malicious intent. It contains numerous embedded URLs, many pointing to potentially compromised CMS upload directories, and a visual download button lure. The primary attack pattern involves directing users to external resources that likely host further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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=tamil+audio+bible+mp3+free+download+niv
- http://hutnia.pl/userfiles/file/10789146414.pdf
- http://tcsm62.org/uploads/news/file/jokaxus.pdf
- https://elemental-ia.com/userfiles/file/safavurijazovubujo.pdf
- https://jbdclothiers.net/emailer/userfiles/file/xitafijuwurivoxelo.pdf
- http://marymo.ru/uploads/files/28446366872.pdf
- http://yey.uw52.com/upload/files/75314821826.pdf
- http://movesearchesuk.com/userfiles/file/wivuwivezokawinunemiko.pdf
- https://bursakaynak.com/userfiles/file/53491708283.pdf
- http://ymmicro.com/files/files/wetaselesoxovitujana.pdf
- http://portalpr-b2b.es/img/user//file/_0811951001631207890.pdf
- http://lncxjzxxw.com/upload_fck/file/2021-9-4/20210904051233106897.pdf
- https://comfort8889.com/upload/files/pugawejepekixebokaxu.pdf
- https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/9ffa17d0356192fdba81022e34340e39/wizulegoma.pdf
- http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16131617bbf5ec---tedupekupoxelorebibu.pdf
- https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/gskuc5af03kjeamqnjmauf8go8/26814650659.pdf
- https://wineuniverse.us/userfiles/file/dizowakozikufizodata.pdf
- https://connatlas.com/home/conn/public_html/ckfinder/userfiles/files/fuwidijebobemurawowa.pdf
- http://gallery4walls.com/upload/editer/file/64109399043.pdf
- http://daisytalavera.com/userfiles/files/wetosamogiri.pdf
- http://boldogelet.hu/media/gulexugutukodalutisera.pdf
- http://saveondealz.com/ckeditor/ckfinder/core/connector/php/uploads/files/77452359765.pdf
- https://tabularasa.lv/sites/tabularasa/uploads/documents/files/60874966682.pdf
- http://www.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c2e6d9c576---valoka.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_off0000df05.bin3626db1af8bdd5f5cb4532ede47c18b35bace54202223c974fd369c89534eabd |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF05 | 10920 bytes |
font_01_sfnt_off0000f80c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF80C | 16792 bytes |
font_02_sfnt_off0001101e.bin933ce775fdc81f6e3457e45d0dc15f343325b9eb2303721307f833093f106f9b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1101E | 19996 bytes |
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