MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was identified as malicious by an ML classifier and contains numerous links to compromised websites, suggesting a link farm or SEO poisoning attack. Several heuristics indicate the PDF is designed to host a large number of links, potentially to distribute malware or phish users. The document body is heavily obfuscated and unreadable, providing no further context.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
Heuristics 5
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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 http://hoaiduc.edu.vn/ckfinder/userfiles/files/29801243775.pdf In PDF document text
- https://almondzwealth.com/administrator/imagetemp/file/55088989728.pdfIn PDF document text
- http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613257383d859---62783038966.pdfIn PDF document text
- https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/3dd444c97d4380a3ca59792ef3df1cd4/pewininimokosofexik.pdfIn PDF document text
- http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0c492eb8ac---lefaxuxarutijoluleke.pdfIn PDF document text
- https://lesartsdansmonjardin.com/userfiles/file/20210703052251.pdfIn PDF document text
- https://makemycake.gr/wp-content/plugins/super-forms/uploads/php/files/87eg5622aomghu99nbtelbqph8/48078178146.pdfIn PDF document text
- http://lorofilmes.com/Uploads/ckfinder/userfiles/files/gajopegonodozanizafegusuk.pdfIn PDF document text
- https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/8h8f6gced7l6qa6b4nt7ci2a7a/pojetonamomovitisawikolal.pdfIn PDF document text
- http://nextgenship.net/upload/file/20210629162494747892.pdfIn PDF document text
- https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/1610baf81e4cf6---5335237660.pdfIn PDF document text
- http://biotledlight.com/userfiles/file///fibodolodetizex.pdfIn PDF document text
- http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606cad4d8b591---rixotobuzukemig.pdfIn PDF document text
- http://cainghienbinhduong.com/uploads/userfiles/file/patewexu.pdfIn PDF document text
- https://lapalettedesarts.fr/gestion/file/82492117603.pdfIn PDF document text
- http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b42b60b643c---nijibivir.pdfIn PDF document text
- http://nokianhakkablue.ru/ckfinder/userfiles/files/topamerelaberudo.pdfIn PDF document text
- https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/161161306e8d94---55898941866.pdfIn PDF document text
- https://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/9crodatkq21d22m3oji30525hn/nusulo.pdfIn PDF document text
- http://wurbs-hanau.de/userfiles/file/molam.pdfIn PDF document text
- http://ana-jsc.com/upload/files/zulodojepupo.pdfIn PDF document text
- https://eletmodguru.hu/files/files/17719751726.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=occupational+health+notes+pdfPDF link annotation
- 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_off0000bda5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBDA5 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d5bc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD5BC | 10740 bytes |
SHA-256: 6c511c5be8d2718a254e46cf6dfba3bb28129f741c220e146368bfe298c0be26 |
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font_02_sfnt_off0000ee5f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE5F | 16732 bytes |
SHA-256: 4057b597eba30bf3c30425443c226b47af47a68ff6311c1fb725f394e699e2ac |
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