MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links pointing to compromised WordPress upload directories and other disposable hosting, indicating it functions as a link farm. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. The presence of multiple compromised CMS upload links is a high-confidence indicator of malicious activity.
Machine Learning
- Nyx PDF Classifier malicious score 0.9819
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://vydavatelstvoklett.sk/userfiles/file/lugusi.pdf
- https://nowbali.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/160a359b7410af---24508331391.pdf
- https://www.saammohaseb.ir/wp-content/plugins/super-forms/uploads/php/files/ac4f4b84844a7a77c0048d5a44201ad9/xemubules.pdf
- http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609024d2e20d0---77365308410.pdf
- http://shsalumniauditorium.org/clients/f/fa/fa32e32112b7cad64a7d7e78b95ed61b/File/lifumedumon.pdf
- https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/8d2d6fa17373b37cd4f98c73f5ebf511/2588039870.pdf
- http://mikailang.net/userfiles/file/20210522055126_1499100684.pdf
- https://walkandsmile.com/userfiles/file/suwaliwasovuzolov.pdf
- https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609da7c0e8cd6---gemolup.pdf
- https://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/93b0287b7501459d3104dda91c326ea8/pusuxagifo.pdf
- http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/16078b8dc72049---48285142460.pdf
- https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/16090bafe80dd5---49943877101.pdf
- https://asiarsolutions.com/userfiles/file/derafemalagena.pdf
- http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160ac7d92c9cb1---vinofutejedexugefegetovew.pdf
- http://piemonteforyou.it/userfiles/file/bisivufuwipamo.pdf
- http://megaprestige.ru/uploads/files/10120877544.pdf
- https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/2a6f27816f6ce3210365b9d0e77e5228/32277674911.pdf
- http://vincityhomes.vn/wp-content/plugins/super-forms/uploads/php/files/qms1i007eum9046ts0acmbmqn3/68505260219.pdf
- http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16076c2cb4571c---xodovo.pdf
- http://bizbecho.com/pa/trainstation/uploads/image/file/tadomadaxokuxubura.pdf
- https://a2designbg.com/userfiles/file/jegakomej.pdf
- http://fairmonteast1975.com/clients/0/01/014dde3c838f86fef2ac1d31a86c415b/File/15818981695.pdf
- https://www.icslights.com/wp-content/plugins/super-forms/uploads/php/files/0c0c0c81243efb401ea60b40911ccb9e/44457125873.pdf
- https://sckprime.com/wp-content/plugins/super-forms/uploads/php/files/0c3e2fa0ec982fdf41ab88bce28f4191/32910974312.pdf
- http://dzbnf.com/upload/file///44230608880.pdf
- http://premium-t.info/files/files/64133901998.pdf
- http://videofilm-tv.ru/content/File/43617211379.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=how+to+get+the+nth+term+of+arithmetic+sequence
- 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_off0000eabc.bin65c9c276ff810523f8f2062205fb1e8b9f6ba836564ec60757cd6aadb521c6b8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEABC | 17452 bytes |
font_01_sfnt_off00011851.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11851 | 16792 bytes |
font_02_sfnt_off00013068.bin838ec9b4c08e44cd3c9aee05c71a4ea36fcacb59e5c3c6a8631398c8bb8ff325 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13068 | 11060 bytes |
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