MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF document contains numerous external links, with a prominent one redirecting to 'https://xajibur.ru/strik?utm_term=how+to+apply+marriage+certificate+kerala'. This URL, combined with the heuristic 'PDF_SEO_LINK_FARM' and 'PDF_SEO_UTM_REDIRECTOR_LINK', indicates a phishing or malware distribution attempt disguised as helpful content. The ML classifier and ClamAV detection strongly support its malicious nature.
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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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://xajibur.ru/strik?utm_term=how+to+apply+marriage+certificate+kerala PDF link annotation
- https://niliwuwez.weebly.com/uploads/1/3/4/2/134265541/merifijala-sadevus-kagomuturebef.pdfIn PDF document text
- https://varupeneg.weebly.com/uploads/1/3/0/9/130969993/lareruforalig_rumovoxabevuve_xesukeninoder.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367019/normal_5fdb3aa9175a5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4405642/normal_60486dfa0447e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4471095/normal_604dd010d36d1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4388062/normal_6039985927d01.pdfIn PDF document text
- https://gajaxaja.weebly.com/uploads/1/3/2/7/132712369/07a1997.pdfIn PDF document text
- https://dajixogemozuv.weebly.com/uploads/1/3/1/4/131438707/7027863.pdfIn PDF document text
- https://gakulenem.weebly.com/uploads/1/3/1/4/131437742/6027595.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4445337/normal_603051b97ce21.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4456687/normal_6041cdec2ea1f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4450870/normal_60391378e2255.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/b96cefeb-47a0-4583-b442-137e399debf2/66779131591.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/11cf00de-6475-4514-b27e-88439c931934/simple_guitar_licks_youtube.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/475092ef-7448-4f12-8d80-b0721a827891/250_phrasal_verbs_in_english_with_examples.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5206630a-53cc-43a2-9006-6d9d4ced0b9a/totaline_thermostat_p374_troubleshooting.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/32304f3e-61c0-4e83-9cff-2277aa47932e/90589761495.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5ea519a1-95f6-4c85-93ac-3dcaa6606723/cfa_level_1_june_2020_curriculum.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2bfe65e5-707c-4855-a80b-f48477f2433f/24690358316.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/844176a7-1bff-41e0-8ee2-b964a591d9c5/pogupa.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_off0000f979.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF979 | 5376 bytes |
SHA-256: 8991b2a7a93890580b2e7099a6b1405bf09c9dae58cc6a2417445673a322c97b |
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font_01_sfnt_off00010bd1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10BD1 | 10388 bytes |
SHA-256: c058735c3c7b5a0d285c2f9fb3197213d2727213edc08977b83584106085e23f |
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