MALICIOUS
244
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file is a PDF containing numerous embedded URLs, many of which are hosted on disposable domains and point to other PDFs. Heuristics indicate a malicious redirector link and a link farm, suggesting the primary purpose is to redirect users to external, potentially malicious content. The ClamAV detection and ML classifier further support its malicious nature, likely as a phishing or redirection lure.
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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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://yafferge.ru/award?keyword=electrical+engineering+mcq+questions+pdf In PDF document text
- https://rudusixan.weebly.com/uploads/1/3/0/7/130775573/kalomejika.pdfIn PDF document text
- https://zudasejavezumuj.weebly.com/uploads/1/3/4/0/134017640/55f89019d25ad.pdfIn PDF document text
- http://bitsracing.net/xowesigom95lhi.pdfIn PDF document text
- https://govuvafokixer.weebly.com/uploads/1/3/1/6/131607022/mudutonofekexo-wovilugekuxukiw.pdfIn PDF document text
- http://idealica-ufficialeitalia.website/bach_fugue_g_minor_violin_sheet_musicyp410.pdfIn PDF document text
- https://nutolifawivu.weebly.com/uploads/1/3/1/4/131437776/4865737.pdfIn PDF document text
- http://domen3.club/dimanasitoxaxe8dtiu.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/73d9a2f7-b57e-4e5e-9896-0160071578a0/what_is_the_setting_of_the_true_story_of_the_three_little_pigs.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/93efd9bf-36d1-4151-99fc-146e71e27ab2/california_common_core_standards_5th_grade_ela.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f1b14614-2423-4319-a79c-dad62a3425d3/nagasaxabofusim.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/495f71ee-821b-43ba-b17b-d59c23fa347e/75901396485.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d923dce6-3bee-47fe-9b89-7a52d7d7fc90/kagefevitiz.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/07c4deb0-8e14-47d1-97eb-60a0ad5b98d1/59021030779.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ceef366b-cd9e-4c42-a297-5f5e27bb7226/39288512603.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/de662d9e-c8e1-4bf7-ac06-2ba58adef92f/92558519323.pdfIn PDF document text
- https://85ed388a-52e0-4e79-9737-9d4b769dda71.filesusr.com/ugd/bb10c5_391b5ebb18444fe5a172b9d37c230f59.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/5be77e44-1e52-449c-8079-99a7d12afdd5/reducing_fractions_worksheet.pdfIn PDF document text
- https://24b051fc-04af-4e2d-8b9e-4e75c06063ec.filesusr.com/ugd/1a488c_18cc79d8941c4e23a6d769e057fd6cf0.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/8ffc7a31-64d6-4a40-9ac9-785551158b97/el_libro_de_los_secretos_pelicula_completa_en_espaol_latino_mega.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_off0001169d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1169D | 5556 bytes |
SHA-256: 3a98cb80d9f5bcf8f96a6fa13b084c4c9b386623ced8e7e034137a5b5b1457d0 |
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font_01_sfnt_off00012969.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12969 | 11992 bytes |
SHA-256: d5a5eb6fae5b4ebc36fd4111a7e6ea61a8291a4ab72cac791da08c27e6c240a3 |
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