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://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/160928cc4dc971---62252474331.pdf In PDF document text
- http://kaztelcom.kz/ckfinder/userfiles/files/26792062706.pdfIn PDF document text
- https://tocgia247.com/wp-content/plugins/super-forms/uploads/php/files/3rpvfpv2c6ttbbt4kcd9gl0j0g/nopitaxufu.pdfIn PDF document text
- http://payassistinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f333998838---bogifoganowipigoxebuz.pdfIn PDF document text
- http://weberstellen.ch/userfiles/file/80768856542.pdfIn PDF document text
- https://wfca-czech.cz/temp/userfiles/files/86235219306.pdfIn PDF document text
- https://adian.eus/files/galeria/files/1523722297.pdfIn PDF document text
- http://mpu-beratung-brendle.de/userfiles/file/42209754230.pdfIn PDF document text
- https://catbasailing.com/upload/fck/file/xukaguzeze.pdfIn PDF document text
- https://gbeequestriansurfaces.com/wp-content/plugins/super-forms/uploads/php/files/6pmm0m5ui7pvs5quqib8c148pd/befogosebevamubixakebunaf.pdfIn PDF document text
- https://proxus.nl/file/34955904288.pdfIn PDF document text
- http://nakatka.com/files/file/xujelonosusazisup.pdfIn PDF document text
- http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a182265a6ac---1302337857.pdfIn PDF document text
- http://ramenzoni.eu/userfiles/files/75594722167.pdfIn PDF document text
- http://timelessmebel.ru/wp-content/plugins/super-forms/uploads/php/files/53cd98582f32b0dc3dc6620f5be798c9/37538222144.pdfIn PDF document text
- http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1606f52b547300---nabekepupi.pdfIn PDF document text
- http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16094589c0a8c2---53000499185.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=dwg+viewer+to+pdfPDF link annotation
- 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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000efc5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEFC5 | 4624 bytes |
SHA-256: 8487ea62d26a240ae61f711bb4f60af49a3363e114b712dbefa48d18cd230025 |
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font_01_sfnt_off0000ffb3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFB3 | 12588 bytes |
SHA-256: c212b49f7cf4ffddb5deec15162d80d1969c1cc6f4076b314abcbdae47633766 |
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font_02_sfnt_off00012948.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12948 | 4324 bytes |
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c |
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