MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains multiple external links, including one prominently featured with a "complex numbers pdf download" query parameter, suggesting a lure for phishing or a scam. The ML classifier and ClamAV detection strongly indicate maliciousness. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a phishing attempt, likely leveraging social engineering to direct users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9989
Heuristics 5
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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 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://krisoc.ru/pbw?utm_term=complex+numbers+pdf+download PDF link annotation
- https://karimimeri.weebly.com/uploads/1/3/1/1/131164281/balixeviz.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4381748/normal_602586a0548c9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4408324/normal_60553416070af.pdfIn PDF document text
- https://putesoborufo.weebly.com/uploads/1/3/0/8/130814126/riduweda-zujadujegarev-mosisilogi-nerivoj.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4419644/normal_605d11d317a94.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4386330/normal_60183bb4bf17e.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4403951/normal_5feb8b14b0f16.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://xibosini.pbworks.com/w/file/fetch/144762525/97000310490.pdfIn PDF document text
- http://dejimebez.pbworks.com/w/file/fetch/144425925/how_to_write_a_formal_letter_in_english_example.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/54df89e4-695b-4404-9562-f9cb871a7c8a/historia_natural_de_la_enfermedad_esquema.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c196c778-37a9-44f8-a931-6f378520a0f4/xusopakevefarexakotizota.pdfIn PDF document text
- http://fudejob.pbworks.com/f/fisudu.pdfIn PDF document text
- http://nuxawakaxaz.pbworks.com/w/file/fetch/144902109/fobumu.pdfIn PDF document text
- http://daridameku.pbworks.com/w/file/fetch/144795504/michael_buble_-_you_dont_know_me_and_thats_all.pdfIn PDF document text
- http://garewewaziwu.pbworks.com/f/64036599057.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/dc271b6c-ddc7-40c3-8295-463ca6dcd576/what_is_the_a_and_t_in_myers_briggs.pdfIn PDF document text
- http://vuxoris.pbworks.com/f/21251754666.pdfIn PDF document text
- http://zezimin.pbworks.com/w/file/fetch/144635181/74652310771.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f09544c5-518d-4f61-a564-e392def96c4f/rock_band_4_songs_wiki.pdfIn PDF document text
- http://goxeguj.pbworks.com/w/file/fetch/144575343/how_to_get_3000_calories_a_day_vegetarian.pdfIn PDF document text
- http://jetubabup.pbworks.com/w/file/fetch/144886365/butol.pdfIn PDF document text
- http://fepewuwakow.pbworks.com/f/61307469249.pdfIn PDF document text
- http://nomebazeregi.pbworks.com/w/file/fetch/144741438/89299307588.pdfIn PDF document text
- http://rorazokazog.pbworks.com/f/what_is_conditional_call_forwarding_airtel.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d3ed.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD3ED | 5392 bytes |
SHA-256: 0361ffe1f31fa90433958ff2999f0b816efdc87dbd3116b2b5ac3d526909ee55 |
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font_01_sfnt_off0000e632.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE632 | 10092 bytes |
SHA-256: 5b7195e6b20c4645889ba98cc8fbd489df1c9e352e2eb1dc72a57401403ba83b |
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font_02_sfnt_off00010903.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10903 | 16108 bytes |
SHA-256: 5b8518a87e22acfb3f781282a6a3a29d32dc4f112ad43484dfa74b39d446fee4 |
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