MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external links, many pointing to compromised CMS upload directories or disposable hosting, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to malicious sites or download further payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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://coretry.ru/uplcv?utm_term=biochemistry+carbohydrates+worksheet+answers PDF link annotation
- https://roomart.uz/ckfinder/userfiles/files/vadotumediruxunipowem.pdfIn PDF document text
- https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/1e773634c8f39d6147f9080905c0b4c2/38698669049.pdfIn PDF document text
- http://blessingsngo.in/userfiles/files/24748541251.pdfIn PDF document text
- http://e-sportis.com/images/upload/dunumi.pdfIn PDF document text
- https://churchosonline.com/wp-content/plugins/super-forms/uploads/php/files/b61927321a8eb6059ce3db8338701d47/juwekufodo.pdfIn PDF document text
- http://vivatbacchus.hu/files/file/voropiji.pdfIn PDF document text
- https://cecprint.com/images/file/zalubezuzovajovof.pdfIn PDF document text
- https://tavio.ru/files/file/32060167282.pdfIn PDF document text
- http://szyqjsj.com/UploadFile/file/20210802234557593.pdfIn PDF document text
- http://nfraccon.org/userfiles/file/pijes.pdfIn PDF document text
- http://jshtextile.com/UserFiles/file///49099012003.pdfIn PDF document text
- http://www.phsdcenter.com/temp/js/ckfinder/userfiles/files/24981566474.pdfIn PDF document text
- http://shield-in.com/userfiles/files/64012810340.pdfIn PDF document text
- http://assessmentinsight.com/ckfinder/userfiles/files/25485907087.pdfIn PDF document text
- https://ubk-sad.de/azubi/userfiles/files/voridufosomisilujonati.pdfIn PDF document text
- http://tractortools.cz/ckfinder/userfiles/files/wevev.pdfIn PDF document text
- https://personalloan2u.com/wp-content/plugins/super-forms/uploads/php/files/d061ca2607d5a40f70752f9682a26268/pagutosesamifelasolijudex.pdfIn PDF document text
- https://dusunceokulu.net/resimler/files/86847317133.pdfIn PDF document text
- https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160be87f9ce2e4---begibipebav.pdfIn PDF document text
- https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/161113cb931cce---rubev.pdfIn PDF document text
- http://smenergy.kr/uploaded/file/66579929460fdc4ac1d1ab.pdfIn PDF document text
- http://nwmanagement.ru/generic/uploaded/file/renolazojamarajivi.pdfIn PDF document text
- https://growmytruck.com/wp-content/plugins/super-forms/uploads/php/files/af8e3294af6a95f28e31d69fd8e9b1f4/newobozabojaxinunufolep.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_off0000b93e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB93E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d150.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD150 | 15892 bytes |
SHA-256: 82eacbb537aba70d2edf6dbb5b88f6abe80bd17a9ba8c193f93ff8af0ae222a3 |
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font_02_sfnt_off0000fa27.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFA27 | 11072 bytes |
SHA-256: adbc2a4012496840d0029256d4983a6f739629be320ace5ff6d38e6ef1b66a4c |
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