MALICIOUS
244
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm. It contains numerous embedded URLs pointing to external PDF documents, many hosted on disposable domains, suggesting a potential SEO manipulation scheme or a distribution point for further malicious content. One critical heuristic identified a link to known malicious redirector infrastructure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9967
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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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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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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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://crophysi.ru/award?keyword=esc+guidelines+non+cardiac+surgery+pdf In PDF document text
- https://luxovozudenez.weebly.com/uploads/1/3/4/1/134108910/f2a5c44cb65c37.pdfIn PDF document text
- http://bejonigu.22web.org/article_15_2019_movie.pdfIn PDF document text
- https://gulijigomun.weebly.com/uploads/1/3/4/3/134350957/e87e8.pdfIn PDF document text
- http://tidirakozodawon.getenjoyment.net/runesimujatuzowuxifafefer.pdfIn PDF document text
- https://vepimogarib.weebly.com/uploads/1/3/4/8/134856589/dufijubewujijuregimu.pdfIn PDF document text
- http://sdfsdfsdf.shaketorch.com/c_est_ce_sont_il_est_ils_sont_exercices.pdfIn PDF document text
- http://tujemet.scienceontheweb.net/mesemepo.pdfIn PDF document text
- http://sugameloxufe.mywebcommunity.org/58314523392.pdfIn PDF document text
- https://cdn.sqhk.co/buzulexoxuve/che7Gji/art_of_war_game_wikipedia.pdfIn PDF document text
- https://zitidifomeki.weebly.com/uploads/1/3/1/4/131412181/waligi.pdfIn PDF document text
- https://mojavopadagesit.weebly.com/uploads/1/3/5/3/135383036/fikakafesuvog-pafebigojo-nototaxote-joromidezub.pdfIn PDF document text
- https://cdn.sqhk.co/jomurozop/TTjjHhj/best_business_plan_template_app.pdfIn PDF document text
- http://tifanagapi.22web.org/transforming_grief_and_loss_workbook.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://nibemodida.myartsonline.com/lefovirasojudoduken.pdfIn PDF document text
- https://b9264059-5ce6-458a-812b-58b21e0c51d1.filesusr.com/ugd/9a3dc1_890b32cb412f44db8daae0b2573642fb.pdf?index=trueIn PDF document text
- https://f85e9a30-dbb9-40fd-a66d-53bd7daafe07.filesusr.com/ugd/1b9faa_20a6e91f2e65445f83d398392c90c267.pdf?index=trueIn PDF document text
- http://gutekuretejapoj.onlinewebshop.net/vishnu_sahasranamam_lyrics_in_english_free_download.pdfIn PDF document text
- https://c78ffd2e-fc3d-4272-86ca-968d835fb7ad.filesusr.com/ugd/0f9ef0_f3ebe0af558a4d39b8b6ca5ade8a8570.pdf?index=trueIn PDF document text
- http://nilezowavegat.rf.gd/geometry_book_mcgraw_hill_answers.pdfIn PDF document text
- http://lagadasisipas.rf.gd/jabotamatexudikajuti.pdfIn PDF document text
- https://6c8027e1-9878-41b3-a9ef-32ba2b6bcd02.filesusr.com/ugd/185811_de17b1cf3c894b35b36e43f42d17f177.pdf?index=trueIn PDF document text
- https://4adff18d-dc39-4349-be2c-eeb12737f1cb.filesusr.com/ugd/9117e0_bfb677f8edeb4354ac5baf52de024e4c.pdf?index=trueIn PDF document text
- https://9e28b13d-ef5c-4d18-821e-e071a8932918.filesusr.com/ugd/0b0738_4b940c806f0f48af807e219220b1a424.pdf?index=trueIn PDF document text
- https://ec8c99fd-5413-4e38-b6a0-2ccbba71fc6f.filesusr.com/ugd/de02f3_2a33247dfa6448c4b9ca993cca4e5b96.pdf?index=trueIn PDF document text
- https://f74ea38a-ab8d-49a0-8d31-9a1d7ce64423.filesusr.com/ugd/5ceade_d25a42337f264567880ce6ca782e4ef0.pdf?index=trueIn PDF document text
- https://0b609444-e5a2-4a7e-9779-a3c6bae51a53.filesusr.com/ugd/529dbf_e0c18893d41546c9b3f8b7e1b61bb220.pdf?index=trueIn 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_off0000f7f3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF7F3 | 5384 bytes |
SHA-256: ac686c96b55ec1c4e55fb7ed89d2217607933b9ee4299172a6fe314dd0ac38bd |
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font_01_sfnt_off00010a62.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A62 | 11544 bytes |
SHA-256: d02eac10c8057a81eb3290192253f4ccd78454be51b59be997553faebf1c24e5 |
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