MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URIs and links to various domains, many of which appear to be compromised or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically points to this behavior.
Machine Learning
- Nyx PDF Classifier malicious score 0.9986
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://huntic.ru/uplcv?utm_term=d.el.ed+4th+semester+syllabus+pdf PDF link annotation
- https://everestart.com/images/stories/file/jidat.pdfIn PDF document text
- http://chromowane.com/userfiles/file/xurorujowaxiv.pdfIn PDF document text
- http://nsk-nalogov.net/upload/files/66495502198.pdfIn PDF document text
- https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/96f82f7f0c73d9f423f3b7bf290323c8/ledizotixukipifev.pdfIn PDF document text
- https://arket.io/wp-content/plugins/super-forms/uploads/php/files/srj4jt75c7bs3pb0j1209anle8/18931670546.pdfIn PDF document text
- http://kayapaliinsaat.net/file/dijevonusurojuzizajo.pdfIn PDF document text
- https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/kukrudmegfdouceqqebiiel8e6/bivexidufobamazatijog.pdfIn PDF document text
- https://virtualpulse.eu/UserFiles/file/69742033272.pdfIn PDF document text
- https://accidentmatters.com/ckfinder/userfiles/files/mawaxavatujoduperu.pdfIn PDF document text
- http://builderall.info/userfiles/file/3600698800.pdfIn PDF document text
- https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/238ec9cb37fc29d696378a8b6bf2183f/bajev.pdfIn PDF document text
- https://thejasmineway.net/wp-content/plugins/super-forms/uploads/php/files/uv6a623406cvbr9iie4os4rfne/vukoni.pdfIn PDF document text
- http://daimarconstrucciones.com/images/admin/file/15256782353.pdfIn PDF document text
- http://chixue.com/uploadfile/file/20210622162740.pdfIn PDF document text
- https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/7b4u8sish3bo0emmhabarirbk2/42777036275.pdfIn PDF document text
- https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/2cecd1b2f7b4205f3fceafe47a8305b7/xirisotidewabar.pdfIn PDF document text
- https://clap-bas.com/userfiles/file/wobedavibidaratitiven.pdfIn PDF document text
- http://agama-rc.com/upload/files/bunuteruriwowuwuka.pdfIn PDF document text
- http://neilreardon.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/43910368883.pdfIn PDF document text
- http://1careglobal.com/upload/files/51152695649.pdfIn PDF document text
- http://zentrumok.com/userfile/files/numupefabotavogubuj.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_off0000b18c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB18C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000c99e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC99E | 16796 bytes |
SHA-256: ce795d73800b48718c8dc97e167d9c3281e43d09a2c1af83fb64eb2827776451 |
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font_02_sfnt_off0000f534.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF534 | 10944 bytes |
SHA-256: c7a313e1b6436a2e91bb5f804cc8ede0972d9962d6779d3876a382de2e3fdb57 |
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