MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs pointing to compromised websites and potentially disposable hosting, suggesting a phishing or malware distribution scheme. The presence of external URIs and link farm characteristics strongly supports this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9933
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://infrive.ru/uplcv?utm_term=heat+and+temperature+worksheet+answers
- https://abofahed.com/userfiles/file/vavodulovibulorovaf.pdf
- http://alexandraharris.com/clients/36054/File/tefevuwilara.pdf
- http://4grd.com/cmsimages/file/zabuwe.pdf
- http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/f8e9e3255f2cb6d7888b571184767356/74104442944.pdf
- https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/fhsgp2mfnhefjvul8llto4hi17/68215560057.pdf
- https://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/6ddb721e3a29343c714e8ca72e40d301/72063508307.pdf
- http://rialta.ie/userfiles/files/xebapatedujizemegekujaz.pdf
- http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d9ec21972c4---63474751799.pdf
- https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607c9e1f7fcfd---53904620985.pdf
- https://elitstroycraft.ru/source/file/gomerafakafuropukikosonuv.pdf
- https://www.ideaklinik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160c324c02e1f8---jagawofipizubudibalego.pdf
- http://24cvety.ru/upload/files/namejabobegalatadeduxi.pdf
- http://ferrogep99.hu/static/media/file/gijadipoto.pdf
- http://qca.ch/userfiles/file/nagutogube.pdf
- http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607cd32cdb64a---babiv.pdf
- https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/160afef4db337c---rekikewawuri.pdf
- http://xn--80aagkbrca3apkgkee0a1bi.xn--p1ai/ckfinder/userfiles/files/38768019054.pdf
- http://bularz-auto.pl/images/userfiles/file/65606773938.pdf
- http://www.serenissimaservizi.com//files/fofoxilagigojipakojas.pdf
- https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/5b8e98395c5ed091038fdceb322fca26/kenawuxesi.pdf
- https://lea-inc.com/wp-content/plugins/super-forms/uploads/php/files/e9fd80e1b548e94f9f956c292e988dcf/rukuwidelevasofi.pdf
- https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609af3c546be7---41117461852.pdf
- http://mnogonomerov.ru/uploads/file/40446984021.pdf
- http://dailyliving.nl/ckfinder/userfiles/files/luparoduwuzuzumugubajunan.pdf
- http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160da36174a601---kojazesilaz.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000fbc0.bind16f45d37543e0d26832c437b4a69dd4e6d92a4279d982bea4a61ac1f77b9948 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFBC0 | 10788 bytes |
font_01_sfnt_off0001146b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1146B | 16792 bytes |
font_02_sfnt_off00012c7d.bin05dc90d3ff6c6928c305dff57557372f06cf261b8057317fecaf58bfa4a00afa |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12C7D | 17124 bytes |
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