MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous external links, many hosted on disposable domains, indicating a link farm or phishing attempt. The ClamAV detection and ML classifier strongly suggest malicious intent, specifically identified as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, contains text related to COVID-19 prevention, likely used as a lure to direct users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
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://zajinet.ru/strik?utm_term=niveles+de+prevencion+primaria+del+covid+19 PDF link annotation
- http://mirror-x.org/stand_by_me_oasis_lyrics_spanishnp91g.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4459937/normal_5fd95a71a9b0d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4385214/normal_602d6ed287129.pdfIn PDF document text
- https://vatikaleme.weebly.com/uploads/1/3/5/3/135386674/379aa18.pdfIn PDF document text
- http://fasadi.site/37429756298u7e5c.pdfIn PDF document text
- https://motabuwupogofe.weebly.com/uploads/1/3/1/6/131607229/xipopisam.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4467036/normal_605968a96df6f.pdfIn PDF document text
- http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdfIn PDF document text
- http://gizovivomiz.getenjoyment.net/little_chief_smoker_recipes_salmon.pdfIn PDF document text
- http://vosojivaru.mypressonline.com/muslim_marriage_biodata_word_format_free_download.pdfIn PDF document text
- https://nodizolubuta.weebly.com/uploads/1/3/5/2/135297944/11d1596ee6f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4471240/normal_5fe7a63748bd2.pdfIn PDF document text
- http://kawasus.scienceontheweb.net/10161519615.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4499942/normal_60129579163ae.pdfIn PDF document text
- http://creamwalls.online/tabebifamosuximogikilerin5ilx.pdfIn PDF document text
- http://kpupnov.pro/how_to_stack_bosch_washing_machine_and_dryer2limd.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://uploads.strikinglycdn.com/files/b23a2e76-7259-4cb6-b7b0-212b75aefa08/mupakebalebedexivorod.pdfIn PDF document text
- https://6d706a39-1f93-4f1a-9423-caccf7e65e71.filesusr.com/ugd/69f91f_7d3f63655c8c4c049b440bf26f9d977b.pdf?index=trueIn PDF document text
- https://466f9527-ada3-48b4-ac0c-4ba5546996ca.filesusr.com/ugd/a4b6b9_fe2ba57996fa40d9a4935f7bfae8e676.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/0e4b7e77-112d-4554-8d1c-2ceaec0924b8/data_structures_and_algorithm_analysis_in_java_3th_edition_by_mark_weiss.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
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f7cd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF7CD | 5164 bytes |
SHA-256: bdab0838008496b895bfeac02b6d825f95d92bd1f7d545d043643b0751dd0b76 |
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font_01_sfnt_off00010939.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10939 | 12780 bytes |
SHA-256: ac305c0ce133803aa1158178bb305f727da29903ecd42844fb0c1e354e9312af |
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font_02_sfnt_off00013290.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13290 | 4324 bytes |
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176 |
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