MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links pointing to compromised websites and disposable hosting, suggesting a phishing or malware distribution campaign. The presence of embedded URLs and the nature of the heuristics indicate an attempt to redirect the user to malicious content, likely via a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
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://synerhu.ru/uplcv?utm_term=notes+from+underground+dostoevsky+pdf PDF link annotation
- https://dom4m.com/userfiles/files/67356310327.pdfIn PDF document text
- http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131308b3c47d---39177244093.pdfIn PDF document text
- http://balogmihaly.hu/UserFiles/file/boboreruvigezexu.pdfIn PDF document text
- https://abrasco.org.br/ckfinder/userfiles/files/39190690041.pdfIn PDF document text
- https://www.leadercaravans.com.au/application/third_party/ckfinder/userfiles/files/fisepaje.pdfIn PDF document text
- http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/bpbldrb3u9tjjks5fo8vhtmuc2/tiforawusomefadunubivuziw.pdfIn PDF document text
- http://helloslow.com/data/userfiles/files/7983922298.pdfIn PDF document text
- http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131869bccba1---25078472018.pdfIn PDF document text
- https://cissud.com/uploads/ck_editor/files/4424228804.pdfIn PDF document text
- https://barcelonacentromedico.es/files/galeria/files/gabagukugoraxatuwesemo.pdfIn PDF document text
- http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c14e0568b2---76595051707.pdfIn PDF document text
- http://mybed.tw/uploads/files/202109070925264598.pdfIn PDF document text
- http://ctm.it/userfiles/file/vonufobujojatebapub.pdfIn PDF document text
- http://wsm.hk/images/files/pemapozulajubu.pdfIn PDF document text
- https://altinhediyeler.com/calisma2/files/uploads/94385819439.pdfIn PDF document text
- https://anna-bel.com/app/webroot/files/userfiles/files/74843092561.pdfIn PDF document text
- http://group-anons.ru/userfiles/files/luziradonasisexu.pdfIn PDF document text
- https://kheops-so.fr/ckfinder/userfiles/files/73319351698.pdfIn PDF document text
- http://spadhotel.com/basefile/spadhotelcom/files/13957182556.pdfIn PDF document text
- https://sibiucuratenie.ro/fckeditor/userfiles/file/rubiselobitasogulox.pdfIn PDF document text
- http://80tner.friend-match.com/upload/files/mubajomipepazadojaje.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_off0000f908.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF908 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0001111f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1111F | 10892 bytes |
SHA-256: 164f011dbe76dd835f88970a9d6be78080639b3f1a59e248137145bc5ca94ad3 |
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font_02_sfnt_off00012a33.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12A33 | 17164 bytes |
SHA-256: 7f102250d3a1488d6d39388cec8e046df989f0b5835fb4ac7f39f28b4924fdff |
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