MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains numerous external links, with one heuristic specifically identifying a 'PDF_SEO_LINK_FARM' suggesting a large number of outbound links intended for SEO manipulation or to host malicious content. The ClamAV detection and ML classifier strongly indicate maliciousness. The primary malicious URL identified is https://pelibifir.ru/award, which is presented in the context of academic referencing, a common lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 5
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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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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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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://pelibifir.ru/award?keyword=harvard+referencing+website+example+pdf
- https://jitebogegamoma.weebly.com/uploads/1/3/4/7/134761197/nupafopolidap.pdf
- https://zajebujop.weebly.com/uploads/1/3/4/9/134902249/7aeae.pdf
- https://wanesibib.weebly.com/uploads/1/3/4/5/134591449/8e392c3bb.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://narivisifan.rf.gd/rivon.pdf
- https://s3.amazonaws.com/kesumasaka/march_2019_sat_math_answers.pdf
- http://gudenojotu.epizy.com/30804817050.pdf
- https://uploads.strikinglycdn.com/files/256551af-9008-4df4-a84c-d5eca7d99c1a/wekogaxoji.pdf
- https://s3.amazonaws.com/liwara/informacion_alimentacion_saludable_wikipedia.pdf
- https://uploads.strikinglycdn.com/files/4574d721-0196-4bd4-b3bf-9e1c500111fe/sony_icd-px440_stereo_ic_digital_voice_recorder_built-in_4gb_and_direct_usb.pdf
- http://jojisoxig.epizy.com/nokezavabag.pdf
- https://18e7ef82-5c75-44fe-ae22-4c356c2c9ce0.filesusr.com/ugd/749e61_c89fdb12370c4097ad13225b3b9eb30e.pdf?index=true
- https://s3.amazonaws.com/fowikorejodi/andrea_mitchell_reports_8_7_19.pdf
- https://uploads.strikinglycdn.com/files/547f745f-d464-4fe1-8002-b6ce06a5cb50/how_to_write_a_self_evaluation_on_teamwork.pdf
- https://ca108e69-7b6b-43f0-8f16-d96ebeb8a33d.filesusr.com/ugd/79e0dc_79fafa8cdc14425db50743603769be18.pdf?index=true
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d71c.bind28fa01d47ea6ad38a513533c033ad1e0da51b70e1efc70d6b69887acb4a5377 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD71C | 5796 bytes |
font_01_sfnt_off0000eadb.binb170f2dfd187eaaee8aae2398509b86f959b17683d5170df65ad7f40abcd3ae1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEADB | 11200 bytes |
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