MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting it is part of an SEO spam or phishing campaign. The document body, though heavily obfuscated, appears to be a lure related to a worksheet answer key, directing users to external URLs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
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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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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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://queure.ru/pbw?utm_term=lesson+7.6+factoring+polynomials+worksheet+answer+key PDF link annotation
- https://cdn-cms.f-static.net/uploads/4407989/normal_60464aab84764.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4476593/normal_60b79b08c621c.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4374203/normal_5fc8f1375aafc.pdfIn PDF document text
- https://jagalanir.weebly.com/uploads/1/3/1/0/131071056/2912791.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366048/normal_60438a3f5e1a6.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4499021/normal_5feb963bb907c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4460477/normal_604a1b2c6c085.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4460975/normal_601c5c5ecec69.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4476010/normal_603ce6d8786b8.pdfIn PDF document text
- https://kevefavovedejot.weebly.com/uploads/1/3/4/7/134719756/7773095.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4447467/normal_60470693033db.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4457849/normal_6013b564e91f5.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4469106/normal_5fec432199b50.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4488339/normal_5fd12b18bceb3.pdfIn PDF document text
- https://wojagezut.weebly.com/uploads/1/3/0/7/130775605/4595450.pdfIn PDF document text
- https://xefolulewonud.weebly.com/uploads/1/3/1/4/131406676/403130e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393180/normal_602b8879bf6f8.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4366959/normal_5fe347c074876.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4471959/normal_60374ccab6730.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://zabodovojif.pbworks.com/w/file/fetch/144426807/roblox_studio_download_ipad.pdfIn PDF document text
- http://jajisaparev.pbworks.com/w/file/fetch/144412299/75533067768.pdfIn PDF document text
- http://zepadatoju.pbworks.com/f/62045824816.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://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_off0001033c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1033C | 5896 bytes |
SHA-256: 1fbcff711b8549555afbc4875bfc04b08b5bf12e514b36640ab0a5994dc62392 |
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font_01_sfnt_off00011752.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11752 | 12188 bytes |
SHA-256: 86848348799d4e52ed1e35f69b8ffc1c445f10253d7ba217b8333653ac454a7c |
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