MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript, which is often used to exploit vulnerabilities or redirect users to malicious sites. The presence of a link farm pointing to compromised WordPress upload directories further suggests a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9966
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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://mamadona.ru/ckfinder/userfiles/files/60792596795.pdf
- http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/g8a7p5r5pc5sbku9qsk6i7pg47/37360688891.pdf
- https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/9165966d3ebbe9b59316a4a7bc081b83/15210517442.pdf
- https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/0d7d33cdf0a24e4184ac0026f1ec0516/vavifutiwonevedirigeva.pdf
- http://www.peopleoftheheath.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078392f42c76---23264252599.pdf
- http://palami.by/images/file/gowukegetibavaguduzadeg.pdf
- http://anatolianlgs.com/userfiles/file/39393410221.pdf
- https://cornerstonelaw.eu/userfiles//file/24438271911.pdf
- http://classicalgardenstatues.com/uplds/file/datibefuze.pdf
- http://langeline.com/ckeditor/upload/files/92582548898.pdf
- https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a7c523d58a8---27230684972.pdf
- http://santiagoporter.com/js/ckfinder/core/connector/php/files/majapod.pdf
- http://kutyasturak.hu/images/files/gulosekeliwajogerigopej.pdf
- http://atya.eu/files/file/13111600705.pdf
- https://addsfly.com/userfiles/file/regilivarewabigixuge.pdf
- https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160897dfd4fc50---rekupudagegusoto.pdf
- https://barcelonamedicalcenter.com/files/galeria/files/gorozirazijibagofipojew.pdf
- https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/f2360c7e6dfe0cef2d161536804e85c3/37479706381.pdf
- http://rjbmachinery.com/d/files/juxunajoxetozejo.pdf
- http://www.urbanwaterways.info/files/xugujogowodebir.pdf
- http://rajhansnursery.com/userfiles/file/bovaxedumajof.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=triple+h+therapy+for+vasospasm
- 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_off0001188a.bin91b768578d701a268704c83756c3da06f68e2f3ec60987fc15df1c1f59dc3895 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1188A | 16720 bytes |
font_01_sfnt_off000143e7.bin46c93aae0ec50b604a75580c2a91c9bf4b6b53b6ec406560d4e15d7dbe0adf43 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x143E7 | 10660 bytes |
font_02_sfnt_off00015c5f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15C5F | 16792 bytes |
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