MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs that point to various domains, many of which appear to be compromised or disposable hosting, suggesting a link farm designed to redirect users to potentially harmful content. The presence of multiple PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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://wastran.ru/uplcv?utm_term=lulubox+like+other+app PDF link annotation
- http://headlinesdinerla.com/uploads/files/1921837015.pdfIn PDF document text
- http://decaldankinh.net/upload/files/55787912997.pdfIn PDF document text
- https://alutat.com/data/file/56122757964.pdfIn PDF document text
- https://www.zochrot.org/ckfinder/userfiles/files/jineborarin.pdfIn PDF document text
- https://mysmartedu.com/uploadimages/files/vigoluzazewukexesuja.pdfIn PDF document text
- http://fcv-bo.org/data/fcv-bo/userfiles/file/tubarusibemuwevozujitetus.pdfIn PDF document text
- https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/161477538ef7d8---lixajikokej.pdfIn PDF document text
- http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613fff88dbd8f---71871608696.pdfIn PDF document text
- http://sartor.ru/upload/files/devodek.pdfIn PDF document text
- http://dryoucosmeceutical.com/userfiles/files/33548813745.pdfIn PDF document text
- https://markmont.eu/editor_uploads/system/files/tiguvizutobiguz.pdfIn PDF document text
- https://homestayhoian.thamtuddt.com/uploads/image/files/walipesimobu.pdfIn PDF document text
- https://safetypadlocks.eu/eurostyl/photos/file/43237134477.pdfIn PDF document text
- https://newtech-utm.pl/userfiles/file/54380757610.pdfIn PDF document text
- http://alptw.com/images/files/78612623512.pdfIn PDF document text
- http://solemarservizi.it/userfiles/files/10226537135.pdfIn PDF document text
- https://argekaucuk.com/nbg/upload/files/zinevaminukezajuwoxo.pdfIn PDF document text
- http://seksdagen.nl/userfiles/file/8189738313.pdfIn PDF document text
- http://gima.ge/admin/ckeditor/ckfinder/userfiles/files/77320022035.pdfIn PDF document text
- https://jagamimpi.com/contents/files/55858800401.pdfIn PDF document text
- http://monterroso-construpuntos.com/campannas/file/julinikogewit.pdfIn PDF document text
- http://hiroshima-teishaku.com/userfiles/file/dukefogewajukok.pdfIn PDF document text
- http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/16137db4f59879---95733005181.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_off0000b3b6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB3B6 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000cbcd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCBCD | 10468 bytes |
SHA-256: 13e0ec19d38aa9f669415bd5901d22f6b90afb49e593abc7ffe6f5c2c0bc7fa9 |
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font_02_sfnt_off0000e37a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE37A | 18248 bytes |
SHA-256: 4b4fc590fc92b266395e44ba241dfe67bec810c999464d42e742081e4804c4a5 |
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