MALICIOUS
244
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a large number of embedded links, many pointing to external PDF files hosted on disposable domains or potentially malicious redirectors. This behavior is indicative of a link farm, often used for SEO manipulation or to distribute further malicious content. ClamAV and ML classifiers also flagged this PDF as malicious, supporting the phishing/trojan classification.
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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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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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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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://crophysi.ru/award?keyword=complexity+of+all+sorting+algorithms+pdf In PDF document text
- https://static.s123-cdn-static.com/uploads/4465403/normal_5feb9ede8b192.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4490523/normal_6036e28338aad.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4477651/normal_6016bac7998be.pdfIn PDF document text
- https://mujolimu.weebly.com/uploads/1/3/4/8/134868529/7161944.pdfIn PDF document text
- https://rizebilawi.weebly.com/uploads/1/3/0/8/130814716/ribemujepusuku.pdfIn PDF document text
- https://bizekexejanagiv.weebly.com/uploads/1/3/4/5/134593847/botixaresaripelo.pdfIn PDF document text
- https://vofesoxofibebup.weebly.com/uploads/1/3/4/9/134900141/fifopuwib-wejapis-pisurojuxe.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454161/normal_600c39069ab5f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4465701/normal_600c6ca2e4cb0.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4481852/normal_6009feb54042e.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4401732/normal_5fef6bbaddfa9.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4373261/normal_5fdf464ccd502.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4384142/normal_6007a7aba1fbd.pdfIn PDF document text
- https://tolirufatava.weebly.com/uploads/1/3/4/8/134879039/6b4a27c.pdfIn PDF document text
- https://nufewaxitobazat.weebly.com/uploads/1/3/4/7/134748461/sipadifezeviduloga.pdfIn PDF document text
- https://bukuduribo.weebly.com/uploads/1/3/1/4/131454389/pipubasaj-wufazo-pomosuxabaranan.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4500895/normal_603d25ce2f071.pdfIn PDF document text
- https://rokubupudila.weebly.com/uploads/1/3/1/8/131856034/7498949.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/jepinebawo/tedazemamafenanovomet.pdfIn PDF document text
- https://s3.amazonaws.com/vabedafozo/76300454832.pdfIn PDF document text
- https://s3.amazonaws.com/gotenukevepunin/46719159519.pdfIn PDF document text
- https://s3.amazonaws.com/zozuxukoxo/devex.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_off0000d94a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD94A | 5528 bytes |
SHA-256: 2195ef1b38e8a9315b576720dfab5211c423bd33df44d12ce13e89a129e998a9 |
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font_01_sfnt_off0000ebf5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEBF5 | 10260 bytes |
SHA-256: b2072978cbf6211d130f602182e38c343897fdec0bb5b3ffd38c524bedc55b61 |
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