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 0.9998
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://wastran.ru/uplcv?utm_term=download+gloud+mod+apk PDF link annotation
- https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/t1ufck7nu24mge0chl7pca5227/99817082374.pdfIn PDF document text
- https://barcelonacentremedic.cat/files/galeria/files/banuxixewitelaxijudupo.pdfIn PDF document text
- http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b0ca10b072---mujivotujobusebazopuka.pdfIn PDF document text
- https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ceae83a2e1---ravaperigomularumipu.pdfIn PDF document text
- http://goldnumber.info/userfiles/file/jurodigijekukewezaveranog.pdfIn PDF document text
- http://neodentpetrosino.it/userfiles/files/69026401032.pdfIn PDF document text
- http://b-solutions.net/userfiles/file/17154286934.pdfIn PDF document text
- http://uspeh-kursk.ru/ckfinder/userfiles/files/86666189563.pdfIn PDF document text
- https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/6a1fba5c06712acb44da9ca17ccfb8ea/xorukivaselowiritupukij.pdfIn PDF document text
- https://varbackaforskola.se/ckfinder/userfiles/files/keveledirufokebukajen.pdfIn PDF document text
- http://bagumul.com/file_upload/spaw_upload/file/20210511071023.pdfIn PDF document text
- https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/160abf49e2834e---dowinusudojisu.pdfIn PDF document text
- https://www.tctnanotech.com/wp-content/plugins/super-forms/uploads/php/files/5a201fcdad45dc0f48a75a66f4d0222b/49535220106.pdfIn PDF document text
- https://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/60de851a82a2953e12a4376b403a5410/xigefudiwibikimuso.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://sharpspringwww.kinsta.cloud/wp-content/plugins/super-forms/uploads/php/files/1392d1f8f37e09f9fd23f9546d1fd944/sulowowuzifulipupikeve.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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e94a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE94A | 5160 bytes |
SHA-256: 7108680325dc01d75d04c1ddbe0f3d03d5641b024888117aab91e07e998d5eae |
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font_01_sfnt_off0000fae9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFAE9 | 11064 bytes |
SHA-256: 5ac300ffd6c9a25aacb412a76ac83e83f4b27631c2105d06160996e972ca615b |
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