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 http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609170f06e456---37674063026.pdf In PDF document text
- https://singaporenotarypublic.com/wp-content/plugins/super-forms/uploads/php/files/353dfb39bbb6c01cacee589ffaba5540/15918215240.pdfIn PDF document text
- https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a18e10210ee---94273881072.pdfIn PDF document text
- https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/udo0j4s3mpofbpa6549r4l7b4l/xibadukisito.pdfIn PDF document text
- https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609263223ab0f---89881003922.pdfIn PDF document text
- https://www.criteriainvest.com.br/wp-content/plugins/super-forms/uploads/php/files/juhr747e2q7to44844q1uln9si/lujujogodagufudaf.pdfIn PDF document text
- http://alituncer.com/userfiles/file/21742127141.pdfIn PDF document text
- https://etre-cheval.fr/Applications/MAMP/htdocs/etre%20cheval/news_pix/file/kevalukopexiguk.pdfIn PDF document text
- http://wamer.org/userfiles/file/fugojapomuwixewi.pdfIn PDF document text
- http://www.bufolari.com/public/immagini/file/zepuninajubexa.pdfIn PDF document text
- http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070020baa3a3---fikegud.pdfIn PDF document text
- https://makiriaszto.hu/ckfinder/userfiles/files/35731462927.pdfIn PDF document text
- http://jointrilogy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160763240ad361---kenojeripezarem.pdfIn PDF document text
- http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9e4ef0ba8d---39897392615.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=how+to+write+appeal+letter+to+lta+for+erp+finePDF 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 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000cc68.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCC68 | 4772 bytes |
SHA-256: 836309bc0e0859356782f298ff9d4224774141b288cfa47bfa7c7b2bed0d369e |
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font_01_sfnt_off0000dcc4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDCC4 | 11028 bytes |
SHA-256: 9bd9abbad1c57e34b94d8e2f8f706b2489655722585e255b2ab15f18b8a49cf3 |
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