MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous external links, with a critical heuristic identifying it as a 'PDF_SEO_LINK_FARM' and 'PDF_SEO_UTM_REDIRECTOR_LINK'. The primary malicious URL identified is 'https://midufefew.ru/strik?utm_term=what+are+the+rules+of+horseback+riding', which is likely used for phishing or to serve a second-stage payload. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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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://midufefew.ru/strik?utm_term=what+are+the+rules+of+horseback+riding PDF link annotation
- https://cdn-cms.f-static.net/uploads/4365545/normal_60596f74a9810.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4445881/normal_601da80583a42.pdfIn PDF document text
- https://rixulajo.weebly.com/uploads/1/3/4/5/134585814/wanegijoguvo_gomije.pdfIn PDF document text
- https://bixikobitil.weebly.com/uploads/1/3/4/5/134525497/wiravi.pdfIn PDF document text
- https://dafalozurevibi.weebly.com/uploads/1/3/4/3/134308304/2761255.pdfIn PDF document text
- https://sowerijowirikuj.weebly.com/uploads/1/3/1/4/131437515/nonavofiso.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4490934/normal_6022e98c9bcbb.pdfIn PDF document text
- https://zakikubefetopu.weebly.com/uploads/1/3/2/6/132696201/9836198d5e197cb.pdfIn PDF document text
- https://dutumeparozawa.weebly.com/uploads/1/3/1/1/131163590/ea9d93cb.pdfIn PDF document text
- https://tajonerimokop.weebly.com/uploads/1/3/4/8/134879789/belofanuvaxiw_renawotugot_lolojapomoreg.pdfIn PDF document text
- https://vitafidazi.weebly.com/uploads/1/3/4/7/134728623/ditidezinaz.pdfIn PDF document text
- https://kepowawovexe.weebly.com/uploads/1/3/4/0/134016687/2211905.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/kugelilizibuwum/nufekeme.pdfIn PDF document text
- https://s3.amazonaws.com/gixawetopoli/liwuvabu.pdfIn PDF document text
- https://s3.amazonaws.com/zunaporam/aprender_ingles_gratis_y_rapido_por_internet.pdfIn PDF document text
- https://s3.amazonaws.com/sizabo/mapa_forgotten_realms_3.5_adventures.pdfIn PDF document text
- https://s3.amazonaws.com/tetenifeme/52435784492.pdfIn PDF document text
- https://s3.amazonaws.com/tejuvonixag/how_does_a_septic_leach_field_work.pdfIn PDF document text
- https://s3.amazonaws.com/xapidajovaji/hotstar_us_app.pdfIn PDF document text
- https://s3.amazonaws.com/lanubili/gospel_of_judas_text.pdfIn PDF document text
- https://s3.amazonaws.com/wokesabisevo/amped_wireless_setup_guide_rec44m.pdfIn PDF document text
- https://s3.amazonaws.com/selivuvumepaveb/aparichita_rabindranath_tagore_story.pdfIn PDF document text
- https://s3.amazonaws.com/tubukeganuji/the_fisherman_and_the_jinni_full_story.pdfIn PDF document text
- https://s3.amazonaws.com/sogovekevi/mojegemugiwoxubajiz.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_off0000e6aa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE6AA | 5500 bytes |
SHA-256: c5749534fa1d6ef7dbe620c0f3be6ea6715d0f606e012ce738ce95356fcd8301 |
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font_01_sfnt_off0000f965.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF965 | 10900 bytes |
SHA-256: b9f6aa245f2cde584b3cfe8e98b330b76ce2b9b4f74d104a9cfdd4b0b78c2b6f |
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