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 disposable hosting and redirector infrastructure, indicating a link farm designed to drive traffic to malicious sites. One critical heuristic identified a link to known malicious redirector infrastructure at 'dafemum.ru'. The ClamAV detection and ML classifier also strongly indicate maliciousness, classifying it as a phishing trojan.
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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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://dafemum.ru/award?keyword=economic+value+added+and+market+value+added+pdf In PDF document text
- https://static.s123-cdn-static.com/uploads/4410674/normal_5ffb9893df5ff.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4480904/normal_601bd326693dd.pdfIn PDF document text
- http://rujisuki.mygamesonline.org/16838087437.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4370072/normal_600549fec3543.pdfIn PDF document text
- http://bagomebefekixob.getenjoyment.net/rikogewaf.pdfIn PDF document text
- http://wejutejejuwow.iblogger.org/apc_back-ups_pro_1500_battery_with_x.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/sonutopexaramuf/79066007881.pdfIn PDF document text
- https://s3.amazonaws.com/rurovikejigibu/61606586759.pdfIn PDF document text
- https://9cf5cc10-3c2e-4e30-ae6b-73ed7beed88a.filesusr.com/ugd/5c2b46_8c3e269891b148cfb86cb20ae63a2366.pdf?index=trueIn PDF document text
- https://78151a86-a557-4e49-81aa-a2539eea45c7.filesusr.com/ugd/204f4f_9dee713f9d594a58b3772b35f06b6ca1.pdf?index=trueIn PDF document text
- https://21c505bb-01ca-4817-a549-4ed1ebba5040.filesusr.com/ugd/7d7105_2800750c37c74265b5ccabcc231a9a82.pdf?index=trueIn PDF document text
- https://12dd324c-696b-4d67-8c19-991f3eacec2c.filesusr.com/ugd/eeb7bd_5ef7578f03444a288edfd95ec3036d58.pdf?index=trueIn PDF document text
- https://42190e62-4dca-482d-a077-ae7b222d7779.filesusr.com/ugd/b91392_f8e52aa5f3274d659088a82e3e2a0926.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/feliso/xunisif.pdfIn PDF document text
- https://91ca87c2-c493-4616-adaa-fbcec45394e1.filesusr.com/ugd/6116da_3f3f35fc2b4b4445a431e880cf446e52.pdf?index=trueIn PDF document text
- http://gevowurarabaj.rf.gd/papomegolusifamizusu.pdfIn PDF document text
- http://xugivazule.rf.gd/58785260937.pdfIn PDF document text
- http://lopilizunutevo.rf.gd/what_rainforest_animals_eat_jaguars.pdfIn PDF document text
- https://s3.amazonaws.com/feborobegibew/canon_eos_rebel_xti_lens.pdfIn PDF document text
- https://d4508431-0eee-4913-ac2a-2ec907ed9b18.filesusr.com/ugd/12daa7_4865c85bf7094e5fbc68c6a8136a77ad.pdf?index=trueIn PDF document text
- https://3ae4d138-4ba3-4962-98fb-1b98b40a6a82.filesusr.com/ugd/38062a_f907537b10614236a636aeb58f81b57b.pdf?index=trueIn 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_off0000ed6e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED6E | 5204 bytes |
SHA-256: b440a2bc7f27d2d5fcb42914abaa43f5478c12ec3b7405b3691cec42faf8e6b6 |
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font_01_sfnt_off0000ff1c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFF1C | 10248 bytes |
SHA-256: b035265b7a469ea44a00238fae4cc935bdc84887ef5f00491b0908da1d8fac3e |
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