MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was identified as malicious by ClamAV and an ML classifier, and exhibits characteristics of a link farm. Multiple heuristics indicate the PDF contains numerous external URIs and links pointing to compromised CMS uploads and disposable hosting, suggesting a phishing or malware distribution scheme. The document body is unreadable, but the presence of many URLs on potentially malicious domains supports the attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
Heuristics 6
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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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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://huntic.ru/uplcv?utm_term=properties+of+integer+exponents+answer+key PDF link annotation
- http://czdashan.cn/uploadfile/file/2021091910441173499.pdfIn PDF document text
- https://tepihtrava.rs/files/2533759232.pdfIn PDF document text
- http://bjsixiang.com/jingkelun/userfiles/files/20210913140720.pdfIn PDF document text
- https://warsztatgdynia.pl/app/webroot/media/files/mojiwaxavivozudomerawila.pdfIn PDF document text
- http://boonfagrandhome.com/user_img/files/soxazegaratebiliviwuju.pdfIn PDF document text
- https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613857fcad4ca---69443425190.pdfIn PDF document text
- http://gelateriacool.it/userfiles/files/31561545784.pdfIn PDF document text
- https://tessuno.com/upload/files/6147be0260b13.pdfIn PDF document text
- http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139fa415ecf0---71648020698.pdfIn PDF document text
- https://mn-lawfirm.com/box/userfiles/file/68410689107.pdfIn PDF document text
- https://vitanov.rs/files/zetasiku.pdfIn PDF document text
- https://chuyennhakienvangvn.net/upload/files/seruvipugokapoxuwonido.pdfIn PDF document text
- https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/161454b028c065---reludinafo.pdfIn PDF document text
- http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1613b4e618ce5b---91544905774.pdfIn PDF document text
- https://otomatcilarmetal.com/otomat/upload/files/52427617906.pdfIn PDF document text
- http://cana.vn/uploads/userfiles/file/42738006167.pdfIn PDF document text
- http://vswet.ru/f/dewowovefutetepadezupetu.pdfIn PDF document text
- http://jnmindia.com/outscapes/admin/ckeditor/uploads/ck/files/5995230451.pdfIn PDF document text
- https://meganimal.pt/site/upload/file/35982727464.pdfIn PDF document text
- http://solarhomepage.ch/fckeditor/editor/images/file/18288784806.pdfIn PDF document text
- http://eiak.org/upload/editor/files/tezidijokapavaw.pdfIn PDF document text
- http://metabolitplus.ru/files/file/wazivegekezow.pdfIn PDF document text
- http://pk.mo/userfiles/file/61839359155.pdfIn PDF document text
- http://lemma-studio.pl/userfiles/file/vakebuno.pdfIn PDF document text
- https://karolinanowak.com/userfiles/file/wuzojeb.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_off0000d604.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD604 | 18740 bytes |
SHA-256: 9ac3c4c3a2f6c1e546dfae409c057634e4e094254050ec67d6987b049f575e75 |
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font_01_sfnt_off000106b4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x106B4 | 10884 bytes |
SHA-256: e773ecf95f919c5d3acd760206f8e190e655acc4efaa95f137450e6b745048a7 |
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font_02_sfnt_off00012021.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12021 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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