MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The sample is a PDF file detected as malicious by ML classifiers and ClamAV. It contains numerous external URIs, including one pointing to 'pelibifir.ru', suggesting a phishing or malware distribution lure. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates the document is part of a link farm hosted on disposable domains, further supporting a malicious intent. No scripts were extracted, but the presence of embedded URLs and the overall heuristics strongly suggest a phishing or credential harvesting attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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://pelibifir.ru/award?keyword=auriculoterapia+terry+oleson+pdf PDF link annotation
- https://static.s123-cdn-static.com/uploads/4444377/normal_5feb30b22f300.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4500911/normal_60038cb8744d9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4376852/normal_6018f775d1178.pdfIn PDF document text
- http://wumewil.sportsontheweb.net/offshore_arbeitszeitgesetz.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4367289/normal_5fe1435f54a89.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393883/normal_6012396ea96ef.pdfIn PDF document text
- https://kumenesasewoton.weebly.com/uploads/1/3/4/7/134773405/11db20f.pdfIn PDF document text
- http://xofofumireke.mypressonline.com/56349475183.pdfIn PDF document text
- https://sivevaredewiw.weebly.com/uploads/1/3/4/4/134464028/mulolujaxuguzon.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4412767/normal_5fea1bcc9a7a9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4457006/normal_5fdafe0a0f309.pdfIn PDF document text
- https://gigazubexu.weebly.com/uploads/1/3/4/6/134613152/pumuwadozavu_gipirekatiwozop_dekesovisu_mukuv.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4455894/normal_5ff41934ecd67.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4499319/normal_6018f9318dd53.pdfIn PDF document text
- http://tozemudezajif.mygamesonline.org/state_first_law_of_thermodynamics.pdfIn PDF document text
- http://mojofaza.mypressonline.com/nine_regions_of_the_abdomen.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4408989/normal_6064e4ee4b955.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4462730/normal_6003684f9ff44.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://xujided.onlinewebshop.net/statis_pro_baseball_rules.pdfIn PDF document text
- https://4b98dde3-f65d-4e11-807b-d4501949e87b.filesusr.com/ugd/4a7ebd_ad43d3a60e804b92bc26f59f5a096826.pdf?index=trueIn PDF document text
- https://a529afa0-707c-494d-9cee-e9df2360aa12.filesusr.com/ugd/a6e48a_55be6e8276da4e6e89b2ca2420fc8f55.pdf?index=trueIn PDF document text
- https://4cf6c2b4-cd84-4b73-83b1-bf7f441162b2.filesusr.com/ugd/e50c99_8e92a8c3957245f991df095b0945533f.pdf?index=trueIn PDF document text
- https://28481333-1ef2-46fb-8ebf-d56c3f24acbc.filesusr.com/ugd/314c35_4e22c1fbad884dd2b694b9241fea4127.pdf?index=trueIn PDF document text
- https://ee60c613-3dd1-430d-b711-08e3dcbf0273.filesusr.com/ugd/19ce5d_66b59cfde93d40589e54bfef238f5982.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_off0000ee6a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE6A | 5240 bytes |
SHA-256: 87517328674557d2cfd64a329a9bc04b38e5d5ec1447f30f16e7e940db8b7c2f |
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font_01_sfnt_off00010059.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10059 | 10620 bytes |
SHA-256: fea5ace2ad9d8957d4ad214d5480ed8ce916146e1b5121ef7964a69123e32f0d |
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