MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains numerous embedded URLs pointing to compromised websites and link farms, suggesting a phishing or malware distribution scheme. The presence of these links indicates an attempt to redirect the user to malicious content, likely exploiting a PDF vulnerability or social engineering.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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://archism.ru/uplcv?utm_term=ejercicios+de+suma+resta+y+multiplicacion+para+cuarto+grado
- https://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/9qtdc2ln1stfoc74pjkvbhekqj/sopodifetufiwokodenum.pdf
- http://rauvuonsach.net/images/uploads/files/86017985205.pdf
- http://dioceseofniranam.org/userfiles/file/31514186411.pdf
- https://stauber.lt/images/files/xitusuguwozowegope.pdf
- http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d6d5091544f---60314397376.pdf
- https://bowenpainter.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f6dc266079---77534234471.pdf
- https://razvozka24.ru/wp-content/plugins/super-forms/uploads/php/files/377e9616beb085b3dcee70179443e30d/zitagepegoziwekevepixori.pdf
- http://ud2-140.com/files/fotusebo.pdf
- https://omomediacion.com/wp-content/plugins/super-forms/uploads/php/files/94a7655d1ae834c43d69779ff767e832/36822162736.pdf
- https://samsungklimalar.com/upload/ckfinder/files/puxadevitibanutimajerulaz.pdf
- http://safires.cz/ckfinder/userfiles/files/40764151326.pdf
- http://mtreurope.com/ckfinder/userfiles/files/86752888742.pdf
- http://aite-materials.com/upfiles/file/podatile.pdf
- http://www.feniuniversity.edu.bd/app/webroot/ckfinder/userfiles/files/5010739085.pdf
- http://jandebruijn.com/uploadimages/files/tapumejowubel.pdf
- http://abpaluso.com/upload/file/62619495917.pdf
- http://www.julitolaschools.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087b8c37a4e2---39794666773.pdf
- http://lamekatus.ee/uploads/ckeditor/files/bugudonabevefavupanipon.pdf
- https://smoothnomad.com/wp-content/plugins/super-forms/uploads/php/files/8264lfq1tjoennr95na4ckd6uq/lawiwibanibomoxikon.pdf
- http://phanphoiongnhuahoasen.vn/upload/files/lujenalebosovuk.pdf
- http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b57eac92bdc---xoxedu.pdf
- http://sun-green.de/ckfinder/userfiles/files/jigujukovemofodorajite.pdf
- http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/fdee8a289f7ec4bce5c93d6758a4a380/98420889729.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_off0000ee95.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE95 | 16792 bytes |
font_01_sfnt_off000106ac.bin8d779f11926d516a8c06a86eed4d566286aa7a5c377f7f95ff9bbbba8ebc85a8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x106AC | 11184 bytes |
font_02_sfnt_off0001209b.bin22d4927a9c7e1fa59787d04aaa16813d9df8337a68564ed869fe8c8fac65cd33 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1209B | 19156 bytes |
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