MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1203 Exploitation for Client Execution
The PDF file contains numerous external links, many of which are part of an SEO link farm, indicating a deceptive purpose. The heuristic 'PDF_SEO_LINK_FARM' and 'PDF_SEO_UTM_REDIRECTOR_LINK' strongly suggest a phishing or malware distribution scheme. The presence of a URL like https://mezovuduw.ru/strik?utm_term=modals+practice+test+with+answers, combined with the ML classifier and ClamAV detection, confirms malicious intent, likely to redirect users to a malicious site.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
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://mezovuduw.ru/strik?utm_term=modals+practice+test+with+answers PDF link annotation
- https://sabumamopadav.weebly.com/uploads/1/3/5/9/135957329/lekoruw_mamifa_warefatuvopiju_setelola.pdfIn PDF document text
- https://sapemeke.weebly.com/uploads/1/3/2/8/132814969/dagafoda-kozaxagusoz.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4479691/normal_6029c381994fc.pdfIn PDF document text
- https://static.s123-cdn-static-d.com/uploads/4486221/normal_60b1a3b4ea51e.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4451205/normal_6007ce9d29eff.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4465548/normal_602d813eb25f8.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4379960/normal_5ff86364c6932.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4484639/normal_5fe41e1f07673.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4370299/normal_6009896e1c86e.pdfIn PDF document text
- https://merasata.weebly.com/uploads/1/3/1/3/131378960/0b4254cacd5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4392195/normal_606a936ba45cc.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4489852/normal_604510f8cda97.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4501383/normal_606d3eed87ea0.pdfIn PDF document text
- https://kukonugaxa.weebly.com/uploads/1/3/5/3/135327287/2706415.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4380525/normal_5ffe712e53007.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/ce506dda-a1b6-41d9-b6ce-ac554b705731/67023065979.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a64dfc60-f5af-4fcb-92f0-b09db76b4019/how_to_calculate_the_volume_of_a_sphere_using_diameter.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2cb1f95a-66fa-487b-b6c7-5b66cb89454f/what_are_the_physical_requirements_to_join_the_army.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1657848a-7473-425b-8205-56551c939b49/fekijozomujoxen.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fd980980-3c60-4269-a8de-598203f319d8/rock_climbing_strength_training_at_home.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/51ccb1d2-97ab-4995-a311-7556ee12d428/91409205649.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_off0000d0ff.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD0FF | 5256 bytes |
SHA-256: 11424b3a1caf283b51344e31f932e1624819fbcc8da3bbbe5d60563d0c2d108f |
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font_01_sfnt_off0000e2f4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE2F4 | 10172 bytes |
SHA-256: 3c9ad917e12553716fd6d26458374040274880ece44890351ba4c19f9dc7dc44 |
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