MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm. It contains numerous external URIs, with a primary URL pointing to 'https://leonvi.ru/wix?keyword=multiplying+cells+worksheet+answers', suggesting a potential SEO manipulation or phishing lure. The presence of many links to disposable hosting further supports its use in malicious activities.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
Heuristics 6
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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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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://leonvi.ru/wix?keyword=multiplying+cells+worksheet+answers
- https://static.s123-cdn-static.com/uploads/4477367/normal_6002560877ce9.pdf
- https://cdn.sqhk.co/xavaxonad/jchb173/mosibekajudafixalan.pdf
- https://cdn-cms.f-static.net/uploads/4413111/normal_601795a531d12.pdf
- https://cdn-cms.f-static.net/uploads/4426556/normal_5fd2e33f7b36c.pdf
- https://cdn.sqhk.co/timadupak/nKhejgu/32381931279.pdf
- https://cdn.sqhk.co/fokatekox/hhhyagf/laurentide_ice_sheet_map.pdf
- https://rawaruginoninum.weebly.com/uploads/1/3/1/0/131070401/a8ef17e.pdf
- https://bajixaxazuxu.weebly.com/uploads/1/3/1/3/131383864/d30862fdbc39.pdf
- https://cdn.sqhk.co/vuwibagula/hfgdbPW/anemia_falciforme_causas_geneticas.pdf
- https://dowogejur.weebly.com/uploads/1/3/5/9/135992185/6219926.pdf
- https://static.s123-cdn-static.com/uploads/4387825/normal_5ff19c7da5376.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://f07eb630-23ff-4298-a1df-d7940f1ba2dc.filesusr.com/ugd/097a5b_61859865bd8e437393cf3db2bff21f82.pdf?index=true
- https://30c0d994-bee2-4d79-bc91-d4aaa7251653.filesusr.com/ugd/0962d9_fb542fc73e79494299f4697a2b176b48.pdf?index=true
- https://uploads.strikinglycdn.com/files/df58212f-fb6c-4f82-a733-bb9919ac00cc/how_much_for_a_retractable_awning_installed.pdf
- https://5071cc05-3fa2-46b1-b944-d2523ca4b51d.filesusr.com/ugd/62e2c1_f0cdf1a520ba4c3280f9cfad8825dd44.pdf?index=true
- https://ba739632-11db-41f7-a023-683a20e55d36.filesusr.com/ugd/99835b_8d4b422ed1344006b566fa7c05764422.pdf?index=true
- https://uploads.strikinglycdn.com/files/1f7d4f1e-585a-4433-b942-33e723e6ac46/1164333362.pdf
- https://32e47638-7206-44c1-ad53-5c6f9176402e.filesusr.com/ugd/e00742_ab2e036a8fbc4eae94c9c3fc2fc3af61.pdf?index=true
- https://b3709dad-42f4-4621-9b7e-74d31ca978cd.filesusr.com/ugd/f91cf1_adf4ecaff55f469fa21235792e9623d0.pdf?index=true
- https://cef8af8d-7071-4339-ac50-fc417d371010.filesusr.com/ugd/a89196_dcbecef7bf574464859faf607ac7c386.pdf?index=true
- https://uploads.strikinglycdn.com/files/d91a1eb9-fce3-409f-a651-d31859d5fc19/bitutovujis.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_off0000e8c2.bincc00477d2208ecf7bd81297c944cf12f75d6aa235fcb8dc5b797e03fa24a712a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE8C2 | 5340 bytes |
font_01_sfnt_off0000fb01.bine8f6a926800514e08ee88e7ecd06f73747b2dfcc2f78fefd9ba0f073beddf01c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB01 | 10740 bytes |
font_02_sfnt_off00011fec.bincd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11FEC | 4324 bytes |
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