MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a large number of external links, many pointing to disposable domains, suggesting a link farm or redirection scheme. The embedded URL and the document body's reference to COVID-19 treatments indicate a lure to a malicious site. ClamAV and ML classifiers confirm its malicious nature, likely as a phishing or trojan delivery mechanism.
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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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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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://baarspo.ru/award?keyword=what+meds+can+i+use+for+covid+19 PDF link annotation
- https://cdn-cms.f-static.net/uploads/4457839/normal_60265c11f1937.pdfIn PDF document text
- http://forovasax.medianewsonline.com/kivuwuduxe.pdfIn PDF document text
- https://zaxiradijewebox.weebly.com/uploads/1/3/4/8/134889682/54d88a68.pdfIn PDF document text
- http://fuzubijixulux.mygamesonline.org/how_to_solve_ratio_as_a_fraction_in_simplest_form.pdfIn PDF document text
- https://vaxejoxumede.weebly.com/uploads/1/3/5/3/135346770/goxikaxikutuse-nakedi-vekopidefiz-zubiperi.pdfIn PDF document text
- https://vomadepuxu.weebly.com/uploads/1/3/4/7/134700608/7d4f337d7.pdfIn PDF document text
- http://ruguwafe.scienceontheweb.net/good_night_gorilla_story.pdfIn PDF document text
- https://wisamifogafize.weebly.com/uploads/1/3/4/5/134598642/8013513.pdfIn PDF document text
- http://bosemefawixuwov.mypressonline.com/82633156050.pdfIn PDF document text
- https://biweworu.weebly.com/uploads/1/3/4/5/134525234/wepatetobul.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4447251/normal_604204d162024.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379483/normal_601e3c5545ba8.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://5c839259-519f-4cee-a1a2-6639d654070b.filesusr.com/ugd/140efa_b58f8963db2f403fb651cff745e38892.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/1a7263f3-c26f-4ea8-956f-2ed8bb49925c/67795711855.pdfIn PDF document text
- https://e691ad07-92dc-45fa-af10-8929b4045ede.filesusr.com/ugd/87b9a8_a4df3bd39b5745ecafdc3681ce536ad5.pdf?index=trueIn PDF document text
- http://vorisenunajix.myartsonline.com/sivarawavotisigukom.pdfIn PDF document text
- https://e216d865-ddc7-438b-99b2-64609380b1bb.filesusr.com/ugd/7ae8b3_f56595c0c4b544b5a346c6346f7a4ff1.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/0bfc9606-bbce-49d9-9f4b-ff6a8d96db86/galob.pdfIn PDF document text
- https://78fa80b2-8629-447b-ad63-53e91e8d4948.filesusr.com/ugd/8f02de_3265ddb48e1a44ccb97ae66f3febe2b9.pdf?index=trueIn PDF document text
- https://28546a20-d0cc-4b82-bb4f-6711990cd5a3.filesusr.com/ugd/0bcf16_03ae320028534d8288e8c74afe3e8c6c.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_off00010dc1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10DC1 | 5508 bytes |
SHA-256: ae07ea6db6adcb5d0e06669b5c244a99c7eb221bcee2464da8429cb53c376fd8 |
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font_01_sfnt_off0001206b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1206B | 10472 bytes |
SHA-256: a1122734eba3b031bf9a0559117ceacc984e2800fff1ea19abeff72daf70badf |
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