MALICIOUS
136
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF document contains a high-severity heuristic indicating it is a phishing lure using an SEO redirector. The embedded URL, https://jacksth.ru/strik?utm_term=how+to+set+dls+file, is the primary indicator of malicious intent, likely leading to a further stage of attack. ML and ClamAV detections further support the malicious classification.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
Heuristics 5
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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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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://jacksth.ru/strik?utm_term=how+to+set+dls+file PDF link annotation
- https://static.s123-cdn-static.com/uploads/4481162/normal_5fe4e4fa834db.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4444875/normal_5ff849bca8976.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4444100/normal_604acc80144ee.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4498842/normal_5fe3b8704d17c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4490736/normal_602a4d13dc36f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4426688/normal_60199e63d2070.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4389108/normal_606d1e2ee6e09.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4495392/normal_600a6a5038893.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4427529/normal_5fcd07b230766.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393499/normal_60337fc22bca9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4456699/normal_6022d4a3ba150.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/b6cc0fea-a622-4c8b-bf88-87a4a0ea17d3/words_their_way_primary_spelling_inventory_excel_spreadsheet.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/bd84c62c-f6c5-487b-a5fb-610efd33ffda/snapper_battery_lawn_mower_reviews.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1f5ac721-2a56-40a7-93ad-0d52afaa196e/zoom_h1_mic_stand.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/710e0f08-ff01-466a-aa3f-3cbb564520aa/38334089633.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/cc8ae757-2657-463d-81db-0f6524e0f55f/how_to_make_snake_using_python.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fcb3ff07-438f-4394-b57e-caf28e83c70e/closer_patrick_marber_play.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/09a42e08-91b3-40b3-b3d1-96fa4301610d/los_100_verbos_mas_usados_en_ingles.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d7fa72f8-fcbd-43cb-a8ba-69b9eb670438/68043993725.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4923c529-22cf-44e3-abe3-8295b22e0b32/what_websites_give_u_free_robux.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/78e3e42d-6330-41a9-ad0f-dc8cc5605d32/how_to_use_insta_saver_on_iphone.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00010c5d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C5D | 4648 bytes |
SHA-256: d3a459d9b79ff069db65759744015b2ca0c2bfbf41a3142f22443be5f2e17f40 |
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font_01_sfnt_off00011c4e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C4E | 1592 bytes |
SHA-256: 236c006f8ac502fe18ab0d85e79ad2d5ec9825334f2d94bc7ca77080c2049286 |
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font_02_sfnt_off0001246d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1246D | 11360 bytes |
SHA-256: 54482a149d8fbd5de5c0da1b1418b5de29c2e2f30eef2091e59a191e2542f186 |
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