MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing and potential trojan distribution. The document contains a link farm pointing to numerous compromised WordPress sites, likely intended to redirect users to download malicious payloads disguised as PDF readers. The presence of embedded URLs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic strongly suggest a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9835
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://pistant.ru/uplcv?utm_term=download+android+pdf+reader
- https://baptistfriends.org/media/56571932035.pdf
- https://hpx.com.ua/wp-content/plugins/super-forms/uploads/php/files/9a54e7573277c6236761701ce7ce3a76/vatezojefikiwozavebaf.pdf
- https://accesoriosalmayor.com/images/userfiles/file/62140205379.pdf
- http://nhandieurangmuoi.com/ckfinder/userfiles/files/34965304920.pdf
- https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/073h9mmtt7hpg0i06u60lr43iv/kagepotiriruf.pdf
- http://anipetkingdom.com/webroot/img/files/lidemigerasitefikosi.pdf
- http://akinmedikal.com/uploads/file/futofugokim.pdf
- https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c01ccc70632---59851480368.pdf
- http://candientuvibra.com/images/file/poketejememifaka.pdf
- https://psfund.org/public/uploads/files/cms_files/daperepuwakelu.pdf
- https://parfumzone.ro/files/file/lokinisaxazasif.pdf
- https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160784b6fda6c4---89107945623.pdf
- https://mmszke.hu/files/file/tejebodilu.pdf
- http://carrozzeriardue.it/userfiles/files/tubinizivuvixafaterag.pdf
- http://maslag.eu/userfiles/file/narikaguworasud.pdf
- https://creteotels.gr/FCKeditor/userimages/file/joruzunaselugutaduxo.pdf
- https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/1607697998614c---49752255456.pdf
- http://belgium-ex.com/images/blog//file/waviponuxakezerikut.pdf
- http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/160714e2e833e8---kenuvujigabejevadifuja.pdf
- https://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1b2793e5c2---dozakoxim.pdf
- http://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/993c989d2851f9fdc4b2a3dd2597cc71/24221307345.pdf
- http://atenngo.com/admin/sites/site/documents/42479936088.pdf
- https://masterpieces-mallorca.com/wp-content/plugins/super-forms/uploads/php/files/004ee9e6cae8452740935077f22b0b13/33444469765.pdf
- http://veivel.com/userfiles/file/85179598257.pdf
- http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f4eaf31330---zekijo.pdf
- https://nscs.org/wp-content/plugins/super-forms/uploads/php/files/faa6ba93d99fd85c07ea74473bdc6340/43386097933.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_off0000f7c0.binc3d068470cdab45ef79eabffa3ff5aff9d80c934cca18fa8ae8365b81e85ff8d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF7C0 | 16728 bytes |
font_01_sfnt_off000122e6.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x122E6 | 16792 bytes |
font_02_sfnt_off00013afd.bina9da404bbab87817f2e3614c170214c0649ec26bea211be0d6f3d78c7ff9b660 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13AFD | 10312 bytes |
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