MALICIOUS
244
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file contains a large number of embedded links, many of which point to potentially malicious redirectors or link farms. The heuristic firings indicate the PDF is designed to host a link farm, with one critical finding identifying a link to known malicious redirector infrastructure. The ML classifier and ClamAV detection strongly support its malicious nature. No scripts were extracted, but the primary attack pattern involves directing users to external, potentially harmful websites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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://yafferge.ru/strik?utm_term=best+online+beginner+guitar+lessons+youtube In PDF document text
- https://cdn-cms.f-static.net/uploads/4450250/normal_601465974f8bb.pdfIn PDF document text
- http://saripituxupagek.sportsontheweb.net/western_blot_technique_theory_and_trouble_shooting.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4415950/normal_6041ba9c1699e.pdfIn PDF document text
- https://cdn.sqhk.co/niripakexad/djcedhj/vazovawuxadutu.pdfIn PDF document text
- https://cdn.sqhk.co/devisofage/zhe6jie/langrisser_1_and_2_remake_switch.pdfIn PDF document text
- http://hdsamara.ru/biology_grade_10-12_textbook_zambia26sfs.pdfIn PDF document text
- https://cdn.sqhk.co/nuvowiraxuf/b6jNejf/customer_journey_map_template_visio.pdfIn PDF document text
- https://cdn.sqhk.co/ributexovek/7Vhhhef/fefexesuvoluwom.pdfIn PDF document text
- http://toolsbestpricemicrometer.site/la_gallina_degollada_horacio_quirogaj8rrc.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4417652/normal_60649a8b210d2.pdfIn PDF document text
- http://buvalopexur.mygamesonline.org/58665070126.pdfIn PDF document text
- http://rankingcoach-seo.com/washington_football_team_2018_rostery99up.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4420602/normal_602cb44bc68ab.pdfIn PDF document text
- http://devlp.club/56787273905v08t6.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://4c8e72c6-e2e3-4108-adc6-102de481692d.filesusr.com/ugd/f4b4ca_50044acb1a7f4837a11039003e59f3b7.pdf?index=trueIn PDF document text
- https://8c77b9b7-c39b-43d6-9406-6086bd2c0f93.filesusr.com/ugd/ee6770_1d8f7c1114f24b5c8f6189f28fd6821a.pdf?index=trueIn PDF document text
- https://be934b08-0dcc-4e2e-8de1-c3c1c32dbfab.filesusr.com/ugd/d5415a_f167b9f79096422dab9308f047ca03df.pdf?index=trueIn PDF document text
- https://5090cb7a-f7dd-45b7-a4a3-960150b62b23.filesusr.com/ugd/dfd4af_b453255e37734793848bb19d540618c7.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_off0000ff42.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFF42 | 5144 bytes |
SHA-256: 4a5917714e3a2ddddc90b2e6896af4e778797f4490fef0f5863dac0efa8fbf9c |
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font_01_sfnt_off000110da.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x110DA | 10804 bytes |
SHA-256: c54f1cc7d14ae86c4dc2dc20881b23e2b4f576c94aeb09a8f255afba6ea395f8 |
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