MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 User Execution: Malicious Link
The PDF contains a large number of embedded URLs, many of which point to compromised CMS uploads and disposable hosting domains, indicating a link farm designed to redirect users. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent. No scripts were extracted, and the document body was unreadable binary data.
Machine Learning
- Nyx PDF Classifier malicious score 0.9993
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://www.badischer-kunstverein.de/ckfinder/userfiles/files/13622121021.pdf In PDF document text
- http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16084a9379051b---23816886483.pdfIn PDF document text
- https://0900107678.com/upload/file/funaxom.pdfIn PDF document text
- http://ventima.ru/userfiles/file/99575202523.pdfIn PDF document text
- http://konemara.hu/userfiles/file/vinazipoteponuwofekoroja.pdfIn PDF document text
- http://hrzservices.com/uploadfiles/file/nafigefesefilo.pdfIn PDF document text
- http://gasasosong.com/upload/fckeditor/file/sowiza.pdfIn PDF document text
- http://hy-concrete.ru/d/files/mumisiti.pdfIn PDF document text
- https://amblamy.ee/upload/file/39107929172.pdfIn PDF document text
- https://maria-galland.ru/files/file/nudaxixuvefelexigep.pdfIn PDF document text
- https://www.arphplumbing.co.uk/wp-content/plugins/super-forms/uploads/php/files/temmjf1kbr4kum28vrcl9h5e4g/dilazifexudafelofevi.pdfIn PDF document text
- http://steakclubhn.com/campannas/file/13405938237.pdfIn PDF document text
- http://dichvu12h.net/userfiles/file/89484035908.pdfIn PDF document text
- https://giriconsultancy.com/content_files/files/xiralusa.pdfIn PDF document text
- https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ba0ccef21e---76472551683.pdfIn PDF document text
- https://www.prieur-equipement.com/ckfinder/userfiles/files/jakibajav.pdfIn PDF document text
- http://cytairtool.com/test/userfiles/file/20210702_3ed7a.pdfIn PDF document text
- http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2097db6f1c---49495186563.pdfIn PDF document text
- http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081725db5b7f---takin.pdfIn PDF document text
- http://fence-alarm.com/userfiles/files/61070197481.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=dermatology+books+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_off0000cc90.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCC90 | 10992 bytes |
SHA-256: d990da28940dbb1c1fef599c59caec09290d11edf3033240be8ab3d053dc1f6e |
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font_01_sfnt_off0000e5c7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE5C7 | 18036 bytes |
SHA-256: c5f0fa200c235c4b0877750585f80ff38fa498118d3da812a490fc365d6d70d2 |
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font_02_sfnt_off000114f8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x114F8 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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