MALICIOUS
144
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file contains a lure related to resetting a Viessmann boiler, presented with a call-to-action button. It redirects to a suspicious URL, 'https://xezojetit.ru/strik', which is flagged as a potential phishing or malware delivery vector. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or to download a secondary payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9990
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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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://xezojetit.ru/strik?utm_term=how+to+reset+viessmann+boiler PDF link annotation
- https://cdn-cms.f-static.net/uploads/4481518/normal_6042ddbc7b83e.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4379498/normal_5fe289634b26b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4452595/normal_6044fd2fc1513.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4391024/normal_6015ac8ca92cd.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4446931/normal_60478b2136d33.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4413838/normal_5ffcbf40b553e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4416125/normal_60604d2f6e9f0.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4482870/normal_603a0c72eec8b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383571/normal_6026e6059f87b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4478667/normal_600ab737dd3df.pdfIn PDF document text
- https://s3.amazonaws.com/pulujolatepuv/flutter_template_builder.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4412900/normal_5fdae908308f2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370989/normal_602650434cefc.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4387577/normal_6065ac0a57bff.pdfIn PDF document text
- https://s3.amazonaws.com/kabisebax/96781519944.pdfIn PDF document text
- https://s3.amazonaws.com/wolina/casio_unisex_digital_watch_f-91w-1.pdfIn PDF document text
- https://s3.amazonaws.com/kelageketisefuv/sudofowinumek.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4455185/normal_604969c37adda.pdfIn PDF document text
- https://s3.amazonaws.com/verirejon/mifojode.pdfIn PDF document text
- https://s3.amazonaws.com/lerezazo/zogabovesilibidukajozado.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4408862/normal_604ccc2c133f7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4497109/normal_605073b68eef3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4479223/normal_600e147374c9a.pdfIn PDF document text
- https://s3.amazonaws.com/lebaxa/nivepuv.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4455884/normal_60153804e889c.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e931.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE931 | 5084 bytes |
SHA-256: 9dd729d4d9caccc0384b5dae7eea9509370db436e54b1e1cad5432893341d58f |
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font_01_sfnt_off0000fa76.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFA76 | 10956 bytes |
SHA-256: ee4bc9612c9ab0d4711009f3eaca60a16d80bfe764855bdaeacc598c751a691a |
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