MALICIOUS
244
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a large number of embedded links, many pointing to disposable hosting, suggesting a link farm designed to manipulate search engine results or distribute malicious content. One of the embedded URLs, 'https://yafferge.ru/strik?utm_term=29+cfr+1926+osha+construction+industry+regulations+book+2020', is flagged as a malicious redirector. The presence of numerous links and the malicious redirector indicate a phishing or redirection attack, likely delivered as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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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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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://yafferge.ru/strik?utm_term=29+cfr+1926+osha+construction+industry+regulations+book+2020 In PDF document text
- https://givexikiduxa.weebly.com/uploads/1/3/1/3/131398224/ninasiluni.pdfIn PDF document text
- http://nasufulorejuwe.mywebcommunity.org/pigowejulopesunuko.pdfIn PDF document text
- http://nefetenebubuwid.iblogger.org/catecismo_da_igreja_catolica_compendio.pdfIn PDF document text
- https://tunajixawovu.weebly.com/uploads/1/3/0/8/130873758/vonadogimotaxi.pdfIn PDF document text
- https://kosofisipituje.weebly.com/uploads/1/3/5/3/135329454/xapusolo.pdfIn PDF document text
- https://dezuvamugofa.weebly.com/uploads/1/3/4/1/134131805/52e7731927.pdfIn PDF document text
- https://dugizixenopiloj.weebly.com/uploads/1/3/4/4/134457585/tefijezoxum_jaziki_pubesetogas.pdfIn PDF document text
- http://mozaduz.mygamesonline.org/bony_to_beastly_download.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://0e8f88b9-656e-4b05-9cd8-8bd477f85547.filesusr.com/ugd/95b9ea_8af27856117444d38b3718d920b37a33.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/gonasidupij/dj_shashi_bangla_song.pdfIn PDF document text
- http://lozisuvuxinosog.epizy.com/unblock_youku_android.pdfIn PDF document text
- https://61090d85-22e6-4724-b969-52a17785150c.filesusr.com/ugd/952c2e_2f545403e1494effacfd495258e53a86.pdf?index=trueIn PDF document text
- https://01ff271a-2d66-4e22-ac0f-a796646d2f56.filesusr.com/ugd/8d93e9_ccd95da8530c4e14818771927df4772d.pdf?index=trueIn PDF document text
- http://jatugeset.atwebpages.com/toxogurazejino.pdfIn PDF document text
- http://fexeledusezeto.rf.gd/wutufejona.pdfIn PDF document text
- https://a9864912-ad24-422b-99f3-2d90f7703507.filesusr.com/ugd/d6af85_fc4857fd8a4e4df0a3b20c6e5c7f09ec.pdf?index=trueIn PDF document text
- https://761e60ea-5e0e-4c43-b4c2-f6a9045c608d.filesusr.com/ugd/545033_31311292339146dea2a1a0a31ee29710.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/kukupunopedon/ace_stream_player_android.pdfIn PDF document text
- http://zurogizezina.rf.gd/the_classroom_management_book_wong_ebook.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 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e353.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE353 | 6132 bytes |
SHA-256: b6ed7ec9fca1f063bcdb741b60344f74ff17e45bd028f31552e211d10eeb5caf |
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font_01_sfnt_off0000f82f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF82F | 10144 bytes |
SHA-256: 47f1f2d269b67e32aeee5ef8b92d1d4717c89113107d34b033a64e667fc99c34 |
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