MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a large number of embedded URLs, many of which point to compromised websites or disposable hosting, indicating a link farm. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the nature of the embedded URLs suggests a potential for redirecting users to malicious sites or for SEO manipulation, aligning with a spearphishing attachment vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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 https://infrive.ru/uplcv?utm_term=asbestos+lung+cancer+claims PDF link annotation
- https://phu-komplex.pl/pliki/file/85609259816.pdfIn PDF document text
- https://dom4m.com/userfiles/files/8320606675.pdfIn PDF document text
- https://cissud.it/uploads/ck_editor/files/salolamomiwelinofox.pdfIn PDF document text
- http://galantemontagnana.it/ckfinder/userfiles/files/zipopadekizavava.pdfIn PDF document text
- https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/161494d05e3656---38627543275.pdfIn PDF document text
- http://fundacionecla.org/resources/original/file/busologuwesap.pdfIn PDF document text
- http://laptopplus.be/app/webroot/files/userfiles/files/63398739170.pdfIn PDF document text
- https://soportedevida.mx/ckfinder/userfiles/files/98451244883.pdfIn PDF document text
- https://artinterior.bg/userfiles/file/wapuloporamikaborevazesax.pdfIn PDF document text
- http://rezidencianestor.sk/app/webroot/files/ckeditor/files/faxuvurotekaxuzonofitibe.pdfIn PDF document text
- https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/161469f0187650---82638631917.pdfIn PDF document text
- https://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/16262ff3edfadf238939fadca729a37e/dobata.pdfIn PDF document text
- http://swissies.lt/ckfinder/userfiles/files/vozinasixidaxij.pdfIn PDF document text
- https://we-plus.tw/ckfinder/userfiles/files/51041091387.pdfIn PDF document text
- http://smwiarus.pl/ckfinder/userfiles/files/30855064093.pdfIn PDF document text
- http://ayurveda-shiatsu-nice.com/upload/files/vavuzubal.pdfIn PDF document text
- http://miskolciharsona.hu/pictures/file/2861515617.pdfIn PDF document text
- http://mikomisushi.com/uploads/files/33457753056.pdfIn PDF document text
- http://paulbwatkinslaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/dasizowewomemo.pdfIn PDF document text
- https://healthlantern.com/ckeditor/ckfinder/userfiles/files/jukozazexufawipil.pdfIn PDF document text
- https://jamiatulbanat.in/wp-content/plugins/formcraft/file-upload/server/content/files/161432b578f31f---54937326157.pdfIn PDF document text
- http://balone.net/_upload/file///tabupamuwomosodomuwuwoguk.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_off0000d61e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD61E | 10792 bytes |
SHA-256: 79e3d671bcb88b5a3803f24f8a2d35d76aabe847f9509a419215fa8f16d61a9a |
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font_01_sfnt_off0000ef00.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF00 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
|||
font_02_sfnt_off00010712.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10712 | 18152 bytes |
SHA-256: 2482e07d494b60e5778af0dfa27a12431c5683f5df2f19a81d7e8848c3b723b8 |
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