MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links pointing to external websites, many of which are hosted on compromised or disposable domains, suggesting a link farm designed to redirect users to potentially harmful content. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest it's used as a lure, likely for phishing or malware distribution, aligning with the Spearphishing Attachment technique.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://chcial.ru/uplcv?utm_term=lol+dog+coloring+pages PDF link annotation
- http://giacongcomposite.com/upload/ck/files/96584146071.pdfIn PDF document text
- http://brighterhealthcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/olqh3lba5n0jbfsvfmurjr2dqs/joredeb.pdfIn PDF document text
- http://maychaybocaocap.com/app/webroot/uploads/files/kukuwigopifogusamugomev.pdfIn PDF document text
- http://inwama4.vn/webroot/img/files/baxabeminibudivenijijoke.pdfIn PDF document text
- http://anhuifan.com/upload_fck/file/2021-5-8/20210508235403863275.pdfIn PDF document text
- http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160a4b8b4a78d5---12555581992.pdfIn PDF document text
- http://ampletrekking.com/userfiles/file/geludevepawiboguge.pdfIn PDF document text
- https://goooinggroup.com/userfiles/files/20210624_045826.pdfIn PDF document text
- https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073d97a5be66---80532427668.pdfIn PDF document text
- https://bem-sa.com/img/file/gupalozupoj.pdfIn PDF document text
- http://agcslohian.com/userfiles/file/jabubapiwodew.pdfIn PDF document text
- https://alves.bg/ckfinder/userfiles/files/nuduganivi.pdfIn PDF document text
- https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c264c31c4b4---84400851449.pdfIn PDF document text
- http://duda-tech.pl/dudatech/upload/file/bidipafi.pdfIn PDF document text
- http://annassteen.com/ckfinder/userfiles/files/jevilok.pdfIn PDF document text
- http://studiozammuner.eu/userfiles/files/getinutenilisasowuzenibif.pdfIn PDF document text
- http://gwardiajuvenia.pl/zdjecia/fck/file/badudisilu.pdfIn PDF document text
- https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/4e747fe034b21ab28889eb10c147ff10/99060415864.pdfIn PDF document text
- https://remoteyourstaff.com/calisma2/files/uploads/98700472118.pdfIn PDF document text
- https://lesartsdansmonjardin.com/userfiles/file/20210531014836.pdfIn PDF document text
- http://alexhofford.com/temp/files/file/23284877758.pdfIn PDF document text
- http://grupomarsamo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c752fe40bff---tinugeroxiparupab.pdfIn PDF document text
- https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/79c6dd4cecc7ab85f1cd3f2b8322c43e/92126467462.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_off0000ea01.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEA01 | 10548 bytes |
SHA-256: 1388313c7f9290701470b0a97ac2cf36186c00b4440bdffb1f009f4debe234f2 |
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font_01_sfnt_off000101db.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x101DB | 16888 bytes |
SHA-256: fd66bb4b1afd8797c87e6a657eda959fec5753c45c42f31e841292f9a49a0268 |
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font_02_sfnt_off00012dff.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12DFF | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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