MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was detected as malicious by ClamAV and ML classifiers, exhibiting characteristics of a link farm. It contains numerous external links, with the primary one pointing to 'https://cructi.ru/pbw?utm_term=superficial+venous+thrombosis+treatment+uptodate'. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting an attempt to manipulate search engine results or distribute content through a network of linked documents. No scripts were extracted, but the presence of many external links implies a phishing or traffic-generation scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 5
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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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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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://cructi.ru/pbw?utm_term=superficial+venous+thrombosis+treatment+uptodate
- https://cdn-cms.f-static.net/uploads/4485693/normal_605a73d5223a4.pdf
- https://cdn-cms.f-static.net/uploads/4404515/normal_605eeba114226.pdf
- https://cdn-cms.f-static.net/uploads/4391331/normal_6012189420425.pdf
- https://kazusabetife.weebly.com/uploads/1/3/5/3/135318045/a35b64.pdf
- https://rimovume.weebly.com/uploads/1/3/1/4/131452953/53e71939.pdf
- https://razesune.weebly.com/uploads/1/3/3/9/133986972/guwosesaf.pdf
- https://static.s123-cdn-static.com/uploads/4456728/normal_5fceb0cea352a.pdf
- https://static.s123-cdn-static.com/uploads/4371267/normal_5feb76e805208.pdf
- https://donaxitod.weebly.com/uploads/1/3/4/6/134688316/7518476.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://uploads.strikinglycdn.com/files/d15117cd-d41e-48f5-b7b6-d55d96b938dd/55126098660.pdf
- http://kepojijudiva.pbworks.com/w/file/fetch/144564312/71374337863.pdf
- https://uploads.strikinglycdn.com/files/ea62fc64-bb11-41e0-b9f8-e8e6362485e6/97153522179.pdf
- https://uploads.strikinglycdn.com/files/2a1cbe31-50d4-4b37-baac-a0a20cc991f6/39487474531.pdf
- https://uploads.strikinglycdn.com/files/e8b7ffc4-e16a-48da-ac46-3bc98e58a170/honda_eu2000i_oil_change_adapter.pdf
- https://uploads.strikinglycdn.com/files/d813bbad-2990-40ce-8fa0-1300964bda16/windows_10_missing_cursor.pdf
- http://gogoporiwo.pbworks.com/w/file/fetch/144440679/lesaxufinizatan.pdf
- https://uploads.strikinglycdn.com/files/1d5c4e42-1d7c-4a22-8cc6-37c2e5ae6389/pijareteginufu.pdf
- https://uploads.strikinglycdn.com/files/99d32280-ea3d-4890-bae7-92241aaffda6/fasotanozasawedibef.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00010301.bin4b81dc4152f4f9fb31019f402dc2ed5e5ab5657e4c2518955dce8eabf54931ff |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10301 | 5580 bytes |
font_01_sfnt_off000115bf.bina933940a3c622baf8529523b47df129d6a1424cc55898a0fb8490df5cd95336e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x115BF | 11208 bytes |
font_02_sfnt_off00013bbb.bin9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13BBB | 4324 bytes |
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