MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a large number of external links, many pointing to disposable hosting services, indicating a link farm designed to distribute malicious content or phish users. The document body, though obfuscated, suggests a lure related to 'math expressions homework answers'. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution via the embedded URLs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
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://irlanc.ru/pbw?utm_term=math+expressions+5th+grade+homework+and+remembering+volume+1+answers PDF link annotation
- https://static.s123-cdn-static-d.com/uploads/4380681/normal_60b3c15cadc25.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4367617/normal_5fcbcbad9bf46.pdfIn PDF document text
- https://fepobiwebefu.weebly.com/uploads/1/3/4/5/134592484/2143253.pdfIn PDF document text
- https://senuwisaf.weebly.com/uploads/1/3/4/0/134018119/473475.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4369911/normal_5fee689680e0f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4410214/normal_606278d2bd6e6.pdfIn PDF document text
- https://vunakeba.weebly.com/uploads/1/3/4/6/134623580/pegazevuzi.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4486984/normal_5ff12c07b4947.pdfIn PDF document text
- https://lozofedexipa.weebly.com/uploads/1/3/5/9/135969573/2209114.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375521/normal_5fe92c0667302.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4420752/normal_5fc68020d1e93.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4380545/normal_6062d8e626b40.pdfIn PDF document text
- https://molujeridinu.weebly.com/uploads/1/3/4/4/134400438/resuxewusura-nodowax.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4417527/normal_603937318f20a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4403679/normal_5fd7a3be47ff3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4481286/normal_601b1dcfb1ac9.pdfIn PDF document text
- https://ginamorevuj.weebly.com/uploads/1/3/4/3/134392530/wimozibasasifawazu.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4490365/normal_5fd98b92cf077.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393625/normal_600bfa9220255.pdfIn PDF document text
- https://favaruzikab.weebly.com/uploads/1/3/4/8/134871436/pevulosiw.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://zosajivapesi.pbworks.com/f/85618423418.pdfIn PDF document text
- http://maxasol.pbworks.com/f/taxelasifemi.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_off0000dd15.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD15 | 5980 bytes |
SHA-256: 5d552538188c11eced4a97f9d0de17c4cf782292409e6c4ed6ad4b5f222b2014 |
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font_01_sfnt_off0000f173.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF173 | 10392 bytes |
SHA-256: 0d4efe035bdd2246fc7a6c14658f068d9e3ea1753e68a66a9227c767921ecdf4 |
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