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 designed to redirect users. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the nature of the embedded links suggests a phishing or malware distribution attempt, likely initiated via spearphishing.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
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://archism.ru/uplcv?utm_term=android+phone+internal+storage+data+recovery PDF link annotation
- https://askisan.com/upload/ckfinder/files/navibakipadipuwute.pdfIn PDF document text
- http://unite-chem.cn/upload/files/41199048390.pdfIn PDF document text
- http://istihdamhaberleri.com/upload/ckfinder/files/tufusofozixa.pdfIn PDF document text
- http://bebaldebaran.eu/userfiles/files/sagububemomadatal.pdfIn PDF document text
- http://p-itos.net/admin/userfile/image/file/49640052665.pdfIn PDF document text
- https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f72396dd61---71831681752.pdfIn PDF document text
- https://tessuno.com/upload/files/614067e6595f2.pdfIn PDF document text
- http://tiszaikaland.hu/upload/file/16231980436.pdfIn PDF document text
- https://tabularasa.lv/sites/tabularasa/uploads/documents/files/lobanizebufadefodotesunug.pdfIn PDF document text
- http://neodermclinic.com/file_media/file_image/file/29170644322.pdfIn PDF document text
- https://perfecthospitals.org/FCKeditor/file/lekesom.pdfIn PDF document text
- http://rayer.cn/d/files/14306551625.pdfIn PDF document text
- https://yantrasearch.com/ckfinder/userfiles/files/jimupuxizixezigazib.pdfIn PDF document text
- https://ecoverservice.be/gallery/file/88187299794.pdfIn PDF document text
- http://donleroy.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/68682414061.pdfIn PDF document text
- http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613100c3399c9---kerobotomawojinuseted.pdfIn PDF document text
- http://camelliafb.com/uploads/files/202109131649023392.pdfIn PDF document text
- http://kindergartenhelden.at/upload/file/lutowupixowubo.pdfIn PDF document text
- http://kielcenoca.pl/files/file/55810246506.pdfIn PDF document text
- http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/1613285a15eaf5---6952917131.pdfIn PDF document text
- http://tcsm62.org/uploads/news/file/34402827616.pdfIn PDF document text
- http://www.detskaoptika.cz/ckfinder/userfiles/files/roviwenazubobafo.pdfIn PDF document text
- https://people11people.gr/uploads/File/6305940906.pdfIn PDF document text
- http://montazerangroup.com/uploader/file/23574537163.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_off0000c981.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC981 | 17664 bytes |
SHA-256: 3fb2a201a3b18ae05b7c111306b730746282a11312a91c4eae31b040326632aa |
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font_01_sfnt_off0000f796.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF796 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010fad.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10FAD | 10952 bytes |
SHA-256: 5987a31c4d3036500c3e1a8b8ff6b876783aafc5c6bb3f43268fa7828547db98 |
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