MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external links, many hosted on disposable domains or compromised CMS uploads, suggesting a link farm designed to redirect users to malicious sites. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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://catamma.ru/uplcv?utm_term=medical+physiology+boron+pdf PDF link annotation
- http://megat.pl/uploaded/fck_files/file/49015392111.pdfIn PDF document text
- http://jn-zhsc.com/upload/72491982823.pdfIn PDF document text
- http://abnig.friendship-match.com/upload/files/rewipusuvol.pdfIn PDF document text
- https://optimumquestsolutions.com/ckfinder/userfiles/files/50213575601.pdfIn PDF document text
- http://flcevent.fcu.edu.tw/plugin/ce1/ckfinder/userfiles/files/20210914001015.pdfIn PDF document text
- https://tucarrorentacar.co/ckfinder/userfiles/files/97638395424.pdfIn PDF document text
- http://vipforiraq.com/userfiles/files/65887894967.pdfIn PDF document text
- http://xn--e1aaafipco3bk8gra3b.xn--p1ai/upload_picture/file/16408018422.pdfIn PDF document text
- https://feniks9.ru/ckfinder/userfiles/files/sarabibe.pdfIn PDF document text
- http://mcutech.net/files/33993271801.pdfIn PDF document text
- http://gruaszarate.com/ckfinder/userfiles/files/79095684939.pdfIn PDF document text
- https://nabil-doukali.com/userfiles/file/85931751452.pdfIn PDF document text
- https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/1613b04b8ebd5e---mepipusujufifonetabu.pdfIn PDF document text
- http://kelakewangshangduchang.a9188.com/upload_files/art_files/files/20210903_165613.pdfIn PDF document text
- https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/43084535302ed2ffbc0f5b41faceb0a8/34710273429.pdfIn PDF document text
- https://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/be3e5547cb629724b8ff3d03b74c8826/kumuxelatus.pdfIn PDF document text
- https://fentesmakina.com/paket/upload/files/kigodaxesokud.pdfIn PDF document text
- http://erainbowrealty.com/userfiles/file/kukisadin.pdfIn PDF document text
- https://faktxeber.ru/resimler/files/joludoxemusaxugavi.pdfIn PDF document text
- http://saovietgroup.com/upload/FCK/file/38404353283.pdfIn PDF document text
- https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/161385e024a15c---65004440828.pdfIn PDF document text
- https://foodsafebox.com/ckfinder/userfiles/files/61622720522.pdfIn PDF document text
- http://coomargroup.com/ckfinder/userfiles/files/134486901.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_off0000c1a5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC1A5 | 11048 bytes |
SHA-256: 3e70d5ea46006c43d9b7feb1069791a06eca86cddce466d04bac7d170ad51e06 |
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font_01_sfnt_off0000dad0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDAD0 | 17312 bytes |
SHA-256: 97c5055e7f3eea2719fae3691ce2d189392fb2934d459925df88832465558066 |
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font_02_sfnt_off000107e5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x107E5 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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