MALICIOUS
104
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains an embedded JavaScript stream and numerous external URIs, many of which point to compromised websites or disposable hosting. The heuristics indicate a link farm designed to direct users to external content, potentially for SEO manipulation or to serve malicious payloads. The ML classifier strongly flagged this PDF as malicious.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
Heuristics 6
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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://wastran.ru/uplcv?utm_term=caracteristicas+de+los+coleopteros+pdf PDF link annotation
- http://ilovegabal.net/fckeditor/_upload/file/86855133960.pdfIn PDF document text
- https://ijp2.com/contents//files/fodelikefadabuvunitu.pdfIn PDF document text
- http://plovdivweek.com/app/templates/js/ckfinder/userfiles/files/40443304161.pdfIn PDF document text
- http://podlahyadvere.sk/editor_uploads/system/files/fubibawugulanizijiga.pdfIn PDF document text
- http://ahlhy.com/uploads/file/281049181830.pdfIn PDF document text
- http://centronegozi.com/public/29995493330.pdfIn PDF document text
- http://orikon.net/Images_upload/files/75630409917.pdfIn PDF document text
- http://biosafety.biz/ckfinder/userfiles/files/bemejimokef.pdfIn PDF document text
- http://maidnheaven.com/wp-content/plugins/formcraft/file-upload/server/content/files/160784111f24d4---mabuf.pdfIn PDF document text
- https://dadrarad.ro/userfiles/file/daperazevi.pdfIn PDF document text
- http://infinity8talents.com/userfiles/file/wepax.pdfIn PDF document text
- http://tamker.hu/userfiles/file/41227455598.pdfIn PDF document text
- https://www.ptlittleflower.org/wp-content/plugins/super-forms/uploads/php/files/jrbr1idt2ubar4je3ks6aoervu/fezuv.pdfIn PDF document text
- http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160faa5c5d81e3---jiwejo.pdfIn PDF document text
- http://xdata.pl/app/webroot/img/ckf/files/45581957344.pdfIn PDF document text
- https://radmangroup-ye.com/rgfiles/file/43370965322.pdfIn PDF document text
- https://www.zulilighting.com/wp-content/plugins/super-forms/uploads/php/files/cff415a67e7d99335a08e3bbaba27467/toguj.pdfIn PDF document text
- https://www.mds-horizons.com/upload/files/wufesawugenejowisezidotix.pdfIn PDF document text
- http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160869e1a8c02e---gixupiwevaxikig.pdfIn PDF document text
- https://navliecky.net/userfiles/file/ripilud.pdfIn PDF document text
- https://chokysitohang.com/Uploads/userfiles/files/tufimiponudukolese.pdfIn PDF document text
- https://dedywiredja.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f9c28637d6---55990181113.pdfIn PDF document text
- https://k2salight.com/wp-content/plugins/super-forms/uploads/php/files/8adae1d87d43fbde3a9c04091b01dcfe/xuxawomobej.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_off000129e8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x129E8 | 10540 bytes |
SHA-256: 58c7d59c9ff84b260cea4ebbcf5c9717d0550031bde7a2820a183c2dcf27897b |
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font_01_sfnt_off0001420f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1420F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00015a21.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15A21 | 19388 bytes |
SHA-256: eaab2849d14e48e5ac203dc0eb4da97cf688722bf7f28b0dd13f4c7dc01c0a55 |
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