MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
Heuristics 7
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://smidgel.ru/uplcv?utm_term=the+joy+of+creation+reborn+android+v1.4 PDF link annotation
- http://bfr-bialapodlaska.pl/userfiles/file/gubutajofonoxuk.pdfIn PDF document text
- https://deedpoll.sg/wp-content/plugins/super-forms/uploads/php/files/bc9bb50f7a468c139975c85d75db7b76/98218947333.pdfIn PDF document text
- http://bobiniauto.com/userfiles/file/pozamoxijibuv.pdfIn PDF document text
- https://awlights.com/wp-content/plugins/super-forms/uploads/php/files/ebf6e8c1e0b5a70f83a7d2664df00517/96942036072.pdfIn PDF document text
- https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/fuj9fvs2claocctcmjdl8hk1e4/60724150446.pdfIn PDF document text
- http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/16090a7dfcf030---26282207832.pdfIn PDF document text
- https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160918de7cdb56---sutarazulelerovil.pdfIn PDF document text
- http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607186b690ace---82663482953.pdfIn PDF document text
- http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bdaf22014cf---rimimasepegikuxovalineb.pdfIn PDF document text
- https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608612d4c27cf---16597145878.pdfIn PDF document text
- http://dailyliving.nl/ckfinder/userfiles/files/84011381952.pdfIn PDF document text
- http://banlinhkienlaptop.com/userfiles/file/rodejanudileguzofulekexe.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609133c01000f---60342796743.pdfIn PDF document text
- http://reszke.pl/fckeditor/editor/filemanager/connectors/php/file/48616046152.pdfIn PDF document text
- http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/pc93cepfrhnadd25t7hmg85hv2/pikole.pdfIn PDF document text
- http://ahdongjiu.com/upload_fck/file/2021-5-16/20210516134536310019.pdfIn PDF document text
- http://kubabus.cz/novy-web/upload/file/wegenolowabonoliza.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000fe1c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFE1C | 2972 bytes |
SHA-256: df9c57e75ffac9d14ca8889c3e55fa61ab7f068d826100da902cbd43eafd38cc |
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font_01_sfnt_off0001089e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1089E | 5396 bytes |
SHA-256: 268b5aedcf7254ab41c774877ff90d7a661caaa53b97de835f021ab937fd695a |
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font_02_sfnt_off00011b15.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11B15 | 13404 bytes |
SHA-256: 52201f6b34dad46679a2dc79f0198121467444558bec6d9ffdc250afa2d9a8e5 |
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font_03_sfnt_off000145b3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x145B3 | 16192 bytes |
SHA-256: 296b33a6e69ac3fa8ed420f1d1b401a0712a5a108b7c5c6efc73671719323d57 |
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